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• Codeigniter: Using data in a controller

  - by Kevin Brown

  I'm new to php and CI, and I'm having some trouble in my controller. I feel that I'm doing this the wrong way, and it could be easier, I just don't know the syntax: $data['members'] = $this->home_model->getUser($id); $credit = $this->home_model->getCredit($id); if ($credit == '0'){stuff...} So I'm getting the user's data that has their the same information as "getCredit" does, but I don't know how to get the single variable that I need for my if statement... How can I just use the "getUser" function so that I'm not pulling redundant information?

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• similar to Set data structure of Java in javascript/jQuery

  - by Suvonkar

  Is there any way to create Set data structure(Unique Collections) like java in javascript?

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• Passing Large amount of data in PHP.

  - by Simple

  I would like to know what is the best way to pass a large amount of XML data from one PHP script to another. I have a script that reads in an XML feed of jobs. I would like to have the script display a list of the job titles as links. When the user clicks a link they would be taken to another page displaying the details for that job. The job details are too large to send in the query string, and it seems poor style to start a session for data that isn't specific to that user. Any ideas?

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• What's the staleness interval good for?

  - by dontWatchMyProfile

  When should I care about the staleness interval in Core Data?

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• how to get data in the variable CURLOPT_FOLLOWLOCATION

  - by cinek1lol

  how to get data in the variable CURLOPT_FOLLOWLOCATION? curl_easy_setopt(curl, CURLOPT_FOLLOWLOCATION,1);

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• Jquery .data() : possible to increment (++ or --)?

  - by Haroldo

  Whats the best way to increment a value in a jquery .data() object?

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• Pass database data to multiples views-Laravel

  - by user3696018

  I have a database with details of daily sales. To query a database, I have a form in a view with parameters that will query as date of admission, client and others. The result is shown in another view with the daily details of income, and below is a summary of the article do all entered. The summary I wish to transfer to another view, try to view :: composer but only transfer the empty query (I saw it with debug bar). Just appeared an empty view. How I can transfer data from the database without the latter view is empty? The second html view is totaly diferent , only the data is the same.

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• PHP Passing Data to a Specific Class? (Data Encapsulation)

  - by Adam184

  I've learned that OOP is all about data encapsulation, but what about passing data between classes that have nothing to do with each other (would the below example be worthy of using extends)? class Dog { private $secretVar; public function getSecretVar() { $this->secretVar = 'psst... only for rainbow!'; return $this->secretVar; } } class Rainbow { public function __construct(Dog $Dog) { print_r($Dog->getSecretVar()); } } $Dog = new Dog(); $Rainbow = new Rainbow($Dog); // ... classes that don't need the $secretVar How would you encapsulate $secretVar for only classes Dog and Rainbow? As of now, anyone can call getSecretVar(), and I'm having a hard time allowing that to happen as it seems to defeat the whole point of encapsulation.

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• how to visualize (value, count) dataset with thousands data points

  - by user510040

  I have a file with 2 numeric columns: value and count. File may have 5000 rows. I do plot(value, count) to find the shape of distribution. But because there are too many data points the picture is not very clear. Do you know better visualization approach? Probably histograms or barplot with grouping close values on x axis will be the better way to look on data? I cannot figure out the syntax of using histogram or barplot for my case.

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• Capturing Data Usage

  - by Chris

  What classes are available in the blackberry API that can be used to capture information on the data usage on the device?

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• How to insert scraping data to mysql

  - by user1887288

  i am fetching data from other websites can any one tell me how to insert fetch data to mysql database Below code i am using to fetch results coming $urls = $_POST["urls"]; require_once('simple_html_dom.php'); $useragent = 'Googlebot/2.1 (http://www.googlebot.com/bot.html)'; foreach ($urls as $url) { $curl = curl_init(); curl_setopt($curl, CURLOPT_URL, $url); curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1); curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 20); curl_setopt($curl, CURLOPT_USERAGENT, $useragent); $str = curl_exec($curl); curl_close($curl); $html= str_get_html($str); foreach($html->find('span.price') as $e) echo $e->innertext . '<br>'; }

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• SQL SERVER – Using expressor Composite Types to Enforce Business Rules

  - by pinaldave

  One of the features that distinguish the expressor Data Integration Platform from other products in the data integration space is its concept of composite types, which provide an effective and easily reusable way to clearly define the structure and characteristics of data within your application.  An important feature of the composite type approach is that it allows you to easily adjust the content of a record to its ultimate purpose.  For example, a record used to update a row in a database table is easily defined to include only the minimum set of columns, that is, a value for the key column and values for only those columns that need to be updated. Much like a class in higher level programming languages, you can also use the composite type as a way to enforce business rules onto your data by encapsulating a datum’s name, data type, and constraints (for example, maximum, minimum, or acceptable values) as a single entity, which ensures that your data can not assume an invalid value.  To what extent you use this functionality is a decision you make when designing your application; the expressor design paradigm does not force this approach on you. Let’s take a look at how these features are used.  Suppose you want to create a group of applications that maintain the employee table in your human resources database. Your table might have a structure similar to the HumanResources.Employee table in the AdventureWorks database.  This table includes two columns, EmployeID and rowguid, that are maintained by the relational database management system; you cannot provide values for these columns when inserting new rows into the table. Additionally, there are columns such as VacationHours and SickLeaveHours that you might choose to update for all employees on a monthly basis, which justifies creation of a dedicated application. By creating distinct composite types for the read, insert and update operations against this table, you can more easily manage this table’s content. When developing this application within expressor Studio, your first task is to create a schema artifact for the database table.  This process is completely driven by a wizard, only requiring that you select the desired database schema and table.  The resulting schema artifact defines the mapping of result set records to a record within the expressor data integration application.  The structure of the record within the expressor application is a composite type that is given the default name CompositeType1.  As you can see in the following figure, all columns from the table are included in the result set and mapped to an identically named attribute in the default composite type. If you are developing an application that needs to read this table, perhaps to prepare a year-end report of employees by department, you would probably not be interested in the data in the rowguid and ModifiedDate columns.  A typical approach would be to drop this unwanted data in a downstream operator.  But using an alternative composite type provides a better approach in which the unwanted data never enters your application. While working in expressor  Studio’s schema editor, simply create a second composite type within the same schema artifact, which you could name ReadTable, and remove the attributes corresponding to the unwanted columns. The value of an alternative composite type is even more apparent when you want to insert into or update the table.  In the composite type used to insert rows, remove the attributes corresponding to the EmployeeID primary key and rowguid uniqueidentifier columns since these values are provided by the relational database management system. And to update just the VacationHours and SickLeaveHours columns, use a composite type that includes only the attributes corresponding to the EmployeeID, VacationHours, SickLeaveHours and ModifiedDate columns. By specifying this schema artifact and composite type in a Write Table operator, your upstream application need only deal with the four required attributes and there is no risk of unintentionally overwriting a value in a column that does not need to be updated. Now, what about the option to use the composite type to enforce business rules?  If you review the composition of the default composite type CompositeType1, you will note that the constraints defined for many of the attributes mirror the table column specifications.  For example, the maximum number of characters in the NationaIDNumber, LoginID and Title attributes is equivalent to the maximum width of the target column, and the size of the MaritalStatus and Gender attributes is limited to a single character as required by the table column definition.  If your application code leads to a violation of these constraints, an error will be raised.  The expressor design paradigm then allows you to handle the error in a way suitable for your application.  For example, a string value could be truncated or a numeric value could be rounded. Moreover, you have the option of specifying additional constraints that support business rules unrelated to the table definition. Let’s assume that the only acceptable values for marital status are S, M, and D.  Within the schema editor, double-click on the MaritalStatus attribute to open the Edit Attribute window.  Then click the Allowed Values checkbox and enter the acceptable values into the Constraint Value text box. The schema editor is updated accordingly. There is one more option that the expressor semantic type paradigm supports.  Since the MaritalStatus attribute now clearly specifies how this type of information should be represented (a single character limited to S, M or D), you can convert this attribute definition into a shared type, which will allow you to quickly incorporate this definition into another composite type or into the description of an output record from a transform operator. Again, double-click on the MaritalStatus attribute and in the Edit Attribute window, click Convert, which opens the Share Local Semantic Type window that you use to name this shared type.  There’s no requirement that you give the shared type the same name as the attribute from which it was derived.  You should supply a name that makes it obvious what the shared type represents. In this posting, I’ve overviewed the expressor semantic type paradigm and shown how it can be used to make your application development process more productive.  The beauty of this feature is that you choose when and to what extent you utilize the functionality, but I’m certain that if you opt to follow this approach your efforts will become more efficient and your work will progress more quickly.  As always, I encourage you to download and evaluate expressor Studio for your current and future data integration needs. Reference: Pinal Dave (http://blog.SQLAuthority.com) Filed under: CodeProject, Pinal Dave, PostADay, SQL, SQL Authority, SQL Documentation, SQL Query, SQL Server, SQL Tips and Tricks, SQLServer, T SQL, Technology

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• SharePoint 2010 Center and Fixed Width of all content on page including the ribbon

  - by Bill Daugherty

  All, I am trying to make the width of the sharepoint 2010 web site to be within a fixed width and centered across the screen. I would like for it to be 800px and centered. When i do this, it seems like it starts to work until the ribbion bar renters. Here is my attempt so far: body.v4/* _lcid="1033" _version="14.0.4536" _LocalBinding */ body,form{ margin:0px; width:800px; text-align:center; vertical-align:middle; } .ms-toolbar{ font-family:verdana; font-size:8pt; text-decoration:none; /* [ReplaceColor(themeColor:"Hyperlink")] */ color:#0072BC; } a.ms-toolbar:hover{ text-decoration:underline; /* [ReplaceColor(themeColor:"Accent1",themeShade:"0.8")] */ color:#005e9a; } .ms-toolbar-togglebutton-on{ /* [ReplaceColor(themeColor:"Accent3-Darker")] */ border:1px solid #2353b2; /* [ReplaceColor(themeColor:"Accent4-Lightest")] */ background-color:#fffacc; } table.ms-toolbar{ height:45px; border:none; /* [RecolorImage(themeColor:"Light2",includeRectangle:{x:0,y:610,width:1,height:42})] */ background:url("/_layouts/images/bgximg.png") repeat-x -0px -610px; /* [ReplaceColor(themeColor:"Light1")] */ background-color:#fff; } table.ms-toolbar{ /* [ReplaceColor(themeColor:"Light2-Lightest")] */ border:1px solid #f1f1f2; } .ms-menutoolbar{ /* [ReplaceColor(themeColor:"Light2-Lightest")] */ border-bottom:1px solid #f1f1f2; /* [ReplaceColor(themeColor:"Light1")] */ background-color:#fff; /* [RecolorImage(themeColor:"Light2",includeRectangle:{x:0,y:610,width:1,height:42})] */ background:url("/_layouts/images/bgximg.png") repeat-x -0px -610px; height:45px; } .ms-menutoolbar td{ padding:0px 0px 0px 4px; margin:0px; border:none; } .ms-menutoolbar td a{ /* [ReplaceColor(themeColor:"Hyperlink")] */ color:#0072bc; font-size:8pt; font-family:verdana; text-decoration:none; } .ms-menutoolbar td a:hover{ /* [ReplaceColor(themeColor:"Hyperlink",themeShade:"0.82")] */ color:#005e9a; text-decoration:none; } .ms-menubuttoninactivehover,.ms-buttoninactivehover{ margin:3px; padding:3px 4px 4px 4px; border:1px solid transparent; background-color:transparent; white-space:nowrap; } .ms-menubuttonactivehover,.ms-buttonactivehover{ margin:3px; padding:3px 4px 4px 4px; /* [RecolorImage(themeColor:"Light1-Darkest",includeRectangle:{x:0,y:431,width:1,height:21})] */ background:url("/_layouts/images/bgximg.png") repeat-x -0px -431px; /* [ReplaceColor(themeColor:"Light1")] */ background-color:#fff; /* [ReplaceColor(themeColor:"Light1-Lighter")] */ border:solid 1px #cccccc; cursor:pointer; } .ms-buttoninactivehover{ white-space:nowrap; } .ms-buttoninactivehover img,.ms-buttonactivehover img{ margin:0px 1px 0px 0px; } td.ms-menutoolbarheader{ font-size:10pt; font-family:verdana; /* [ReplaceColor(themeColor:"Accent3-Medium")] */ color:#204d89; font-weight:bold; line-height:16px; padding-left:7px; padding-right:7px; } .ms-listheaderlabel{ /* [ReplaceColor(themeColor:"Dark2")] */ color:#204d89; } .ms-listheaderlabel,.ms-viewselector,.ms-viewselectortext,.ms-viewselectorhover{ font-size:8pt; font-family:tahoma; } .ms-menutoolbar td td.ms-viewselector,.ms-menutoolbar td td.ms-viewselectorhover,.ms-toolbar td td.ms-viewselector,.ms-toolbar td td.ms-viewselectorhover,td.ms-viewselector{ /* [ReplaceColor(themeColor:"Light1")] */ background-color:#ffffff; /* [ReplaceColor(themeColor:"Dark2-Medium")] */ border:1px solid #D3D6DA; font-weight:bold; padding:0px; } .ms-menutoolbar td td{ border:none; } div.ms-viewselector,div.ms-viewselectorhover{ padding:2px 4px 2px 4px; cursor:pointer; } div.ms-viewselector a,div.ms-viewselectorhover a.ms-menu-a span{ /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; } .ms-viewselector-arrow{ vertical-align:middle; } .ms-menutoolbar td td.ms-viewselectorhover,.ms-toolbar td td.ms-viewselectorhover{ /* [RecolorImage(themeColor:"Accent1",method:"Tinting",includeRectangle:{x:0,y:654,width:1,height:18})] */ background:url("/_layouts/images/bgximg.png") repeat-x -0px -654px; /* [ReplaceColor(themeColor:"Accent1-Lighter")] */ border-color:#91cdf2; /* [ReplaceColor(themeColor:"Accent1",themeTint:"0.35")] */ background-color:#ccebff; } .ms-bottompaging{ /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ background:#ebf3ff; } .ms-bottompagingline1{ height:3px; /* [ReplaceColor(themeColor:"Light1")] */ background-color:#ffffff; } .ms-bottompagingline2,.ms-bottompagingline3{ height:1px; /* [ReplaceColor(themeColor:"Light1")] */ background-color:#ffffff; } .ms-bottompaging .ms-vb{ /* [ReplaceColor(themeColor:"Light1")] */ background-color:#ffffff; } .ms-bottompagingline2 img,.ms-bottompagingline3 img,.ms-partline img{ display:none; } .ms-paging{ padding-left:11px; padding-right:11px; padding-bottom:4px; font-family:tahoma,sans-serif; font-size:8pt; font-weight:normal; /* [ReplaceColor(themeColor:"Accent3-Darker")] */ color:#204d89; } .ms-bottompaging .ms-paging{ /* [ReplaceColor(themeColor:"Dark1-Medium")] */ color:#4c4c4c; } .ms-menutoolbar .ms-splitbuttondropdown{ padding:3px 2px 0px 2px; } .ms-menutoolbar .ms-splitbuttontext{ padding:0px 7px 1px 7px; } .ms-splitbutton{ margin:0px 2px; } .ms-splitbuttonhover{ margin:0px 2px; /* [RecolorImage(themeColor:"Accent6-Darker",method:"Tinting",includeRectangle:{x:0,y:431,width:1,height:21})] */ background:url("/_layouts/images/bgximg.png") repeat-x -0px -431px; border-collapse:collapse; height:22px; background-color:#fff; } .ms-splitbuttonhover .ms-splitbuttondropdown{ padding:3px 1px 0px 2px; } .ms-splitbuttonhover .ms-splitbuttontext{ padding:0px 6px 0px 6px; } .ms-splitbuttonhover .ms-splitbuttondropdown,.ms-splitbuttonhover .ms-splitbuttontext{ border:solid 1px #cccccc; cursor:pointer; } .ms-propertysheet { font-size:1em; } .ms-propertysheet th.ms-gridT1 { text-align:left; /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; width:190px; } .ms-viewselect a:link{ font-size:8pt; font-family:Verdana,sans-serif; /* [ReplaceColor(themeColor:"Accent3")] */ color:#003399; } select{ font-size:8pt; font-family:Verdana,sans-serif; } hr{ /* [ReplaceColor(themeColor:"Accent3")] */ color:#003399; height:2px; } .ms-input{ font-size:8pt; font-family:Verdana,sans-serif; } .ms-treeviewouter{ margin-top:5px; } .ms-quicklaunch table td{ /* [ReplaceColor(themeColor:"Accent3-Lighter")] */ border-top:1px solid #add1ff; } .ms-quicklaunch .ms-treeviewouter table td{ border-top:none; } .ms-quicklaunch table.ms-navheader td,.ms-quicklaunch span.ms-navheader{ padding:1px 4px 4px 4px; } div.ms-treeviewouter > div > div{ border:none; } .ms-quicklaunch span.ms-navheader{ /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ background-color:#d6e8ff; /* [ReplaceColor(themeColor:"Accent3-Lighter")] */ border-top:1px solid #add1ff; /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ border-left:solid 1px #f2f8ff; /* [ReplaceColor(themeColor:"Accent3-Lighter")] */ border-bottom:1px solid #add1ff; padding:1px 6px 3px 6px; } .ms-quicklaunch table.ms-navsubmenu2 td{ border:none; } .ms-quicklaunch table.ms-selectednavheader td{ width:100%; /* [ReplaceColor(themeColor:"Accent6-Lightest")] */ background-color:#fff699; } .ms-quicklaunch table.ms-selectednavheader{ border:none; } .ms-quicklaunch span{ display:block; } .ms-quicklaunch div.ms-navsubmenu1 br{ display:none; } .ms-quicklaunch table.ms-selectednav{ /* [ReplaceColor(themeColor:"Accent6-Darker")] */ border:solid 1px #d2b47a; /* [RecolorImage(themeColor:"Accent1",method:"Tinting")] */ background-image:url("/_layouts/images/selectednav.gif"); background-repeat:repeat-x; /* [ReplaceColor(themeColor:"Accent6-Lightest")] */ background-color:#ffe6a0; margin:2px; margin-bottom:0; width:97%; } .ms-quicklaunch table.ms-selectednav td{ background:transparent url("/_layouts/images/selectednavbullet.gif"); background-repeat:no-repeat; background-position:left top; /* [ReplaceColor(themeColor:"Light1")] */ border:solid 1px #ffffff; padding:0px 4px 1px 12px; margin:0px; } table.ms-selectednav td a.ms-selectednav{ background:none; /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; } .ms-quicklaunch table.ms-selectednavheader td{ width:100%; /* [ReplaceColor(themeColor:"Accent6-Lighter")] */ background-color:#ffe6a0; /* [RecolorImage(themeColor:"Accent1",method:"Tinting")] */ background-image:url("/_layouts/images/selectednav.gif"); background-repeat:repeat-x; padding-top:2px; padding-bottom:2px; /* [ReplaceColor(themeColor:"Light1")] */ border-top:solid 1px #ffffff; /* [ReplaceColor(themeColor:"Light1")] */ border-left:solid 1px #ffffff; padding:1px 6px 3px 6px; } .ms-selectednavheader a{ font-weight:bold; /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; text-decoration:none; } .ms-selectednavheader a:hover{ /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; text-decoration:underline; } table.ms-navitem td,span.ms-navitem{ background-image:url("/_layouts/images/navBullet.gif"); background-repeat:no-repeat; background-position:left top; padding:3px 6px 4px 16px; font-family:tahoma; } .ms-navsubmenu1{ width:100%; border-collapse:collapse; /* [ReplaceColor(themeColor:"Light1-Lightest")] */ background-color:#f2f8ff; } .ms-navsubmenu2{ width:100%; /* [ReplaceColor(themeColor:"Light1-Lightest")] */ background-color:#f2f8ff; margin-bottom:6px; } table.ms-navselected{ padding:2px; } table.ms-navselected,span.ms-navselected{ /* [RecolorImage(themeColor:"Accent6",method:"Tinting")] */ background-image:url("/_layouts/images/SELECTEDNAV.GIF"); /* [ReplaceColor(themeColor:"Accent6-Lighter")] */ background-color:#ffe6a0; background-repeat:repeat-x; } table.ms-navselected td{ background-image:url("/_layouts/images/navBullet.gif"); background-repeat:no-repeat; background-position:top left; padding:3px 6px 4px 17px; } table.ms-navheader td{ background-image:none; } .ms-navheader a{ font-weight:bold; /* [ReplaceColor(themeColor:"Accent3")] */ color:#003399; text-decoration:none; } .ms-navheader a:hover{ /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; text-decoration:underline; } .ms-navitem a{ /* [ReplaceColor(themeColor:"Dark2")] */ color:#3b4f65 !important; text-decoration:none; display:inline-block; } .ms-navitem a:hover{ /* [ReplaceColor(themeColor:"Accent1")] */ color:#44aff6 !important; text-decoration:underline !important; } .ms-quicklaunchouter{ border:none; margin-bottom:5px; } .ms-quicklaunchouter{ margin:0px 1px 2px 1px; } .ms-treeviewouter a.ms-navitem{ padding:4px 4px 5px; margin-left:4px; border-color:transparent; border-width:1px; border-style:solid !important; } .ms-tvselected a.ms-navitem{ /* [RecolorImage(themeColor:"Light1")] */ background:url("/_layouts/images/selbg.png") repeat-x left top; /* [ReplaceColor(themeColor:"Accent1",themeTint:"0.15")] */ background-color:#ccebff; /* [ReplaceColor(themeColor:"Accent1-Lighter")] */ border-color:#91cdf2; /* [ReplaceColor(themeColor:"Accent1-Lightest")] */ border-top-color:#c6e5f8; border-width:1px; border-style:solid !important; /* [ReplaceColor(themeColor:"Dark2")] */ color:#003759 !important; display:inline-block; } .ms-tvselected a:hover{ /* [ReplaceColor(themeColor:"Dark2")] */ color:#003759 !important; } table.ms-recyclebin td{ /* [ReplaceColor(themeColor:"Light1-Lightest")] */ background-color:#f2f8ff; width:100%; /* [ReplaceColor(themeColor:"Light1")] */ border-top:solid 1px #ffffff; /* [ReplaceColor(themeColor:"Light1")] */ border-left:solid 1px #ffffff; padding:3px 5px 7px 3px; } table.ms-recyclebin td a{ font-weight:bold; /* [ReplaceColor(themeColor:"Accent5-Darker")] */ color:#008800; text-decoration:none; } table.ms-recyclebin td a:hover{ /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; text-decoration:underline; } .ms-quickLaunch{ padding-top:5px; } .ms-quickLaunch h3{ font-size:1em; font-weight:normal; /* [ReplaceColor(themeColor:"Dark2")] */ color:#929fad; margin:0px 0px 6px 10px; } .ms-quicklaunchheader{ padding:2px 6px 4px 10px; font-weight:bold; /* [ReplaceColor(themeColor:"Light1-Lighter")] */ color:#676767; background-image:url("/_layouts/images/quickLaunchHeader.gif"); background-repeat:repeat-x; /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ background-color:#d6e8ff; /* [ReplaceColor(themeColor:"Light1-Lightest")] */ border-left:solid 1px #f2f8ff; margin-left:-7px; font-size:inherit; } .ms-quicklaunchheader a,.ms-unselectednav a{ /* [ReplaceColor(themeColor:"Dark1-Lighter")] */ color:#676767 !important; text-decoration:none; } .ms-quicklaunchheader a:hover{ /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000 !important; text-decoration:underline; } .ms-navline{ /* [ReplaceColor(themeColor:"Light1-Darker")] */ border-bottom:1px solid #adadad; } .ms-navwatermark{ /* [ReplaceColor(themeColor:"Accent6-Lighter")] */ color:#ffdf88; } .ms-selectednav{ border:1px solid #2353b2; /* [ReplaceColor(themeColor:"Accent6-Lightest")] */ background:#fff699; padding-top:1px; padding-bottom:2px; } .ms-unselectednav{ /* [ReplaceColor(themeColor:"Accent3-Medium")] */ border:1px solid #83b0ec; padding-top:1px; padding-bottom:2px; } .ms-verticaldots{ /* [ReplaceColor(themeColor:"Accent3-Medium")] */ border-right:1px solid #83b0ec; border-left:none; } .ms-nav{ /* [ReplaceColor(themeColor:"Accent3-Medium")] */ background-color:#83b0ec; font-family:tahoma; } .ms-globalTitleArea{ text-align:right; background-image:url("/_layouts/images/siteTitleBKGD.gif"); background-position:right top; background-repeat:repeat-y; padding-left:5px; padding-right:0px; padding-top:1px; } .ms-titlearea{ /* [ReplaceColor(themeColor:"Dark1-Lighter")] */ color:#666666; font-family:tahoma; font-size:8pt; letter-spacing:.1em; } .ms-titlearea a { /* [ReplaceColor(themeColor:"Accent3-Darker")] */ color:#3966bf; text-decoration:none; } .ms-titlearea a:hover { /* [ReplaceColor(themeColor:"Dark1")] */ color:#000000; text-decoration:underline; } .ms-titlearealeft { /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ background-color:#d6e8ff; } TD.ms-titleareaframe,Div.ms-titleareaframe,.ms-pagetitleareaframe{ background:url("/_layouts/images/bgximg.png") repeat-x -0px -461px; /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ background-color:#d6e8ff; text-align:left; } div.ms-titleareaframe{ height:100%; } .ms-pagetitleareaframe table{ background-image:url("/_layouts/images/topshape.jpg"); background-repeat:no-repeat; background-position:332px 4px; height:54px; } .ms-titlearealine{ /* [ReplaceColor(themeColor:"Accent3-Medium")] */ background-color:#83b0ec; } .ms-titleareaframe table td.ms-titlearea,.ms-areaseparator table td.ms-titlearea,.ms-pagetitleareaframe table td.ms-titlearea{ padding:7px 0px 1px 0px; } .ms-sitemapdirectional,.ms-sitemapdirectional a{ unicode-bidi:embed; } .ms-areaseparatorcorner{ background-image:url("/_layouts/images/framecornergrad.gif"); background-position:left top; background-repeat:repeat-y; height:8px; /* [ReplaceColor(themeColor:"Accent5-Medium")] */ border-right:1px solid #6f9dd9; } td.ms-areaseparatorleft{ background:#d6e8ff url("/_layouts/images/bgximg.png") repeat-x -0px -461px; /* [ReplaceColor(themeColor:"Accent5-Medium")] */ border-right:1px solid #6f9dd9; height:100%; } div.ms-areaseparatorleft{ background-repeat:no-repeat; background-position:-143px 0px; /* [ReplaceColor(themeColor:"Accent5-Medium")] */ border-right:1px solid #6f9dd9; height:100%; } div.ms-areaseparatorright{ /* [ReplaceColor(themeColor:"Accent5-Medium")] */ border-left:1px solid #6f9dd9; padding-right:2px; height:100%; } .ms-titlearearight .ms-areaseparatorright{ background:#d6e8ff url("/_layouts/images/bgximg.png") repeat-x -0px -461px; /* [ReplaceColor(themeColor:"Accent5-Medium")] */ border-left:1px solid #6f9dd9; padding-right:2px; height:100%; } .ms-areaseparator{ /* [ReplaceColor(themeColor:"Accent4-Lightest")] */ background-color:#ffeaad; border-right:none; border-left:none; padding-left:5px; 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} .ms-vh .ms-menuimagecell img,.ms-vh2 .ms-menuimagecell img,.ms-vh-icon .ms-menuimagecell img{ margin-top:2px; margin-bottom:2px; } .ms-descriptiontext{ /* [ReplaceColor(themeColor:"Dark1-Medium")] */ color:#4c4c4c; font-family:tahoma; font-size:8pt; text-align:left; } .ms-statusdescriptiontext { color:#4c4c4c; background-color:#FFFF00; font-family:tahoma; font-size:8pt; text-align:left; } .ms-webpartpagedescription{ font-family:verdana; font-size:8pt; /* [ReplaceColor(themeColor:"Dark1-Lighter")] */ color:#5a5a5a; padding:8px 12px 0px 12px; } .ms-separator { /* [ReplaceColor(themeColor:"Light2",themeShade:"0.02")] */ color:#f1f1f2; background-repeat:repeat-x; border:none; padding-left:4px; font-size:10pt; } .ms-rtetoolbarmenu .ms-separator{ padding-left:0px !important; /* [ReplaceColor(themeColor:"Accent3-Medium")] */ color:#83b0ec; } .ms-separator img { height:12px; width:1px; margin:0px 1px 0px 1px; /* [ReplaceColor(themeColor:"Light2",themeShade:"0.02")] */ background:#f1f1f2; } .ms-propertysheet th.ms-authoringcontrols { /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ background-color:#f1f1f2; 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padding-bottom:3px; } .ms-gb .ms-vb2{ font-weight:normal; } .ms-listviewtable .ms-gb,.ms-listviewtable .ms-gb2{ padding-top:14px; } .ms-gb2{ height:22px; /* [ReplaceColor(themeColor:"Dark1-Medium")] */ color:#4c4c4c; padding-bottom:3px; /* [ReplaceColor(themeColor:"Accent3-Lightest")] */ border-bottom:1px solid #e3efff; /* [ReplaceColor(themeColor:"Light1-Lightest")] */ border-top:1px solid #f9f9f9; } .ms-gbload{ height:22px; /* [ReplaceColor(themeColor:"Dark1-Medium")] */ color:#4c4c4c; /* [ReplaceColor(themeColor:"Light1")] */ background-color:#ffffff; padding-bottom:3px; } .ms-vb,.ms-vb2,.ms-vb-user,.ms-vb-tall,.ms-pb,.ms-pb-selected { /* [ReplaceColor(themeColor:"Dark1")] */ color:#6d6f72; vertical-align:top; } .ms-vb a:link,.ms-vb2 a:link,.ms-vb-user a:link{ /* [ReplaceColor(themeColor:"Hyperlink")] */ color:#0072BC; text-decoration:none; } .ms-vb a:hover,.ms-vb2 a:hover,.ms-vb-user a:hover{ text-decoration:underline; } .ms-vb a:visited,.ms-vb2 a:visited,.ms-vb-user a:visited{ /* [ReplaceColor(themeColor:"Hyperlink")] */ color:#0072BC; text-decoration:none; } .ms-vb a:visited:hover,.ms-vb2 a:visited:hover,.ms-vb-user a:visited:hover{ /* [ReplaceColor(themeColor:"Hyperlink")] */ color:#0072BC; text-decoration:underline; } .ms-alternatingstrong .ms-vb a:link,.ms-alternatingstrong .ms-vb2 a:link,.ms-alternatingstrong .ms-vb-user a:link,.ms-alternatingstrong .ms-vb a:visited,.ms-alternatingstrong .ms-vb2 a:visited,.ms-alternatingstrong .ms-vb-user a:visited,.ms-alternatingstrong .ms-vb a:visited:hover,.ms-alternatingstrong .ms-vb2 a:visited:hover,.ms-alternatingstrong .ms-vb-user a:visited:hover{ /* [ReplaceColor(themeColor

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• SQL SERVER – Simple Example of Incremental Statistics – Performance improvements in SQL Server 2014 – Part 2

  - by Pinal Dave

  This is the second part of the series Incremental Statistics. Here is the index of the complete series. What is Incremental Statistics? – Performance improvements in SQL Server 2014 – Part 1 Simple Example of Incremental Statistics – Performance improvements in SQL Server 2014 – Part 2 DMV to Identify Incremental Statistics – Performance improvements in SQL Server 2014 – Part 3 In part 1 we have understood what is incremental statistics and now in this second part we will see a simple example of incremental statistics. This blog post is heavily inspired from my friend Balmukund’s must read blog post. If you have partitioned table and lots of data, this feature can be specifically very useful. Prerequisite Here are two things you must know before you start with the demonstrations. AdventureWorks – For the demonstration purpose I have installed AdventureWorks 2012 as an AdventureWorks 2014 in this demonstration. Partitions – You should know how partition works with databases. Setup Script Here is the setup script for creating Partition Function, Scheme, and the Table. We will populate the table based on the SalesOrderDetails table from AdventureWorks. -- Use Database USE AdventureWorks2014 GO -- Create Partition Function CREATE PARTITION FUNCTION IncrStatFn (INT) AS RANGE LEFT FOR VALUES (44000, 54000, 64000, 74000) GO -- Create Partition Scheme CREATE PARTITION SCHEME IncrStatSch AS PARTITION [IncrStatFn] TO ([PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY], [PRIMARY]) GO -- Create Table Incremental_Statistics CREATE TABLE [IncrStatTab]( [SalesOrderID] [int] NOT NULL, [SalesOrderDetailID] [int] NOT NULL, [CarrierTrackingNumber] [nvarchar](25) NULL, [OrderQty] [smallint] NOT NULL, [ProductID] [int] NOT NULL, [SpecialOfferID] [int] NOT NULL, [UnitPrice] [money] NOT NULL, [UnitPriceDiscount] [money] NOT NULL, [ModifiedDate] [datetime] NOT NULL) ON IncrStatSch(SalesOrderID) GO -- Populate Table INSERT INTO [IncrStatTab]([SalesOrderID], [SalesOrderDetailID], [CarrierTrackingNumber], [OrderQty], [ProductID], [SpecialOfferID], [UnitPrice],   [UnitPriceDiscount], [ModifiedDate]) SELECT     [SalesOrderID], [SalesOrderDetailID], [CarrierTrackingNumber], [OrderQty], [ProductID], [SpecialOfferID], [UnitPrice],   [UnitPriceDiscount], [ModifiedDate] FROM       [Sales].[SalesOrderDetail] WHERE      SalesOrderID < 54000 GO Check Details Now we will check details in the partition table IncrStatSch. -- Check the partition SELECT * FROM sys.partitions WHERE OBJECT_ID = OBJECT_ID('IncrStatTab') GO You will notice that only a few of the partition are filled up with data and remaining all the partitions are empty. Now we will create statistics on the Table on the column SalesOrderID. However, here we will keep adding one more keyword which is INCREMENTAL = ON. Please note this is the new keyword and feature added in SQL Server 2014. It did not exist in earlier versions. -- Create Statistics CREATE STATISTICS IncrStat ON [IncrStatTab] (SalesOrderID) WITH FULLSCAN, INCREMENTAL = ON GO Now we have successfully created statistics let us check the statistical histogram of the table. Now let us once again populate the table with more data. This time the data are entered into a different partition than earlier populated partition. -- Populate Table INSERT INTO [IncrStatTab]([SalesOrderID], [SalesOrderDetailID], [CarrierTrackingNumber], [OrderQty], [ProductID], [SpecialOfferID], [UnitPrice],   [UnitPriceDiscount], [ModifiedDate]) SELECT     [SalesOrderID], [SalesOrderDetailID], [CarrierTrackingNumber], [OrderQty], [ProductID], [SpecialOfferID], [UnitPrice],   [UnitPriceDiscount], [ModifiedDate] FROM       [Sales].[SalesOrderDetail] WHERE      SalesOrderID > 54000 GO Let us check the status of the partition once again with following script. -- Check the partition SELECT * FROM sys.partitions WHERE OBJECT_ID = OBJECT_ID('IncrStatTab') GO Statistics Update Now here has the new feature come into action. Previously, if we have to update the statistics, we will have to FULLSCAN the entire table irrespective of which partition got the data. However, in SQL Server 2014 we can just specify which partition we want to update in terms of Statistics. Here is the script for the same. -- Update Statistics Manually UPDATE STATISTICS IncrStatTab (IncrStat) WITH RESAMPLE ON PARTITIONS(3, 4) GO Now let us check the statistics once again. -- Show Statistics DBCC SHOW_STATISTICS('IncrStatTab', IncrStat) WITH HISTOGRAM GO Upon examining statistics histogram, you will notice that now the distribution has changed and there is way more rows in the histogram. Summary The new feature of Incremental Statistics is indeed a boon for the scenario where there are partitions and statistics needs to be updated frequently on the partitions. In earlier version to update statistics one has to do FULLSCAN on the entire table which was wasting too many resources. With the new feature in SQL Server 2014, now only those partitions which are significantly changed can be specified in the script to update statistics. Cleanup You can clean up the database by executing following scripts. -- Clean up DROP TABLE [IncrStatTab] DROP PARTITION SCHEME [IncrStatSch] DROP PARTITION FUNCTION [IncrStatFn] GO Reference: Pinal Dave (http://blog.sqlauthority.com)Filed under: PostADay, SQL, SQL Authority, SQL Performance, SQL Query, SQL Server, SQL Tips and Tricks, T SQL Tagged: SQL Statistics, Statistics

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• Cloud Computing Architecture Patterns: Don’t Focus on the Client

  - by BuckWoody

  Normally I try to put topics in the positive in other words "Do this" not "Don't do that". Sometimes its clearer to focus on what *not* to do. Popular development processes often start with screen mockups, or user input descriptions. In a scale-out pattern like Cloud Computing on Windows Azure, that's the wrong place to start. Start with the Data    Instead, I recommend that you start with the data that a process requires. That data might be temporary or persisted, but starting with the data and its requirements helps to define not only the storage engine you need but also drives everything from security to the integrity of the application. For instance, assume the requirements show that the user must enter their phone number, and that this datum is used in a contact management system further down the application chain. For that datum, you can determine what data type you need (U.S. only or International?) the security requirements, whether it needs ACID compliance, how it will be searched, indexed and so on. From one small data point you can extrapolate out your options for storing and processing the data. Here's the interesting part, which begins to break the patterns that we've used for decades: all of the data doesn't have the same requirements. The phone number might be best suited for a list, or an element, or a string, with either BASE or ACID requirements, based on how it is used. That means we don't have to dump everything into XML, an RDBMS, a NoSQL engine, or a flat file exclusively. In fact, one record might use all of those depending on the use-case requirements. Next Is Data Management  With the data defined, we can move on to how to store the data. Again, the requirements now dictate whether we need a full relational calculus or set-based operations, or we can choose another method based on the requirements for the data. And breaking another pattern its OK to store in more than once, in more than one location. We do this all the time for reporting systems and Business Intelligence systems, so this is a pattern we need to think about even for OLTP data. Move to Data Transport How does the data get around? We can use a connection-based method, sending the data along a transport to the storage engine, but in some cases we may want to use a cache, a queue, the Service Bus, or Complex Event Processing. Finally, Data Processing Most RDBMS engines, NoSQL, and certainly Big Data engines not only store data, but can process and manipulate it as well. Its doubtful that you'll calculate that phone number right? Well, if you're the phone company, you most certainly will. And so we see that even once we've chosen the data type, storage and engine, the same element can have different computing requirements based on how it is used. Sure, We Need A Front-End At Some Point Not all data is entered by human hands in fact most data isn't. We don't really need a Graphical User Interface (GUI) we need some way for a GUI to get data into and out of the systems listed earlier.   But when we do need to allow users to enter or examine data, that should be left to the GUI that best fits the device the user has. Ever tried to use an application designed for a web browser on a phone? Or one designed for a tablet on a phone? Its usually quite painful. The siren song of "We'll just write one interface for all devices" is strong, and has beguiled many an unsuspecting architect. But they just don't work out.   Instead, focus on the data, its transport and processing. Create API calls or a message system that allows for resilient transport to the device or interface, and let it do what it does best. References Microsoft Architecture Journal:   http://msdn.microsoft.com/en-us/architecture/bb410935.aspx Patterns and Practices:   http://msdn.microsoft.com/en-us/library/ff921345.aspx Windows Azure iOS, Android, Windows 8 Mobile Devices SDK: http://www.windowsazure.com/en-us/develop/mobile/tutorials/get-started-ios/ Windows Azure Facebook SDK: http://ntotten.com/2013/03/14/using-windows-azure-mobile-services-with-the-facebook-sdk-for-windows-phone/

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• Oh no! My padding's invalid!

  - by Simon Cooper

  Recently, I've been doing some work involving cryptography, and encountered the standard .NET CryptographicException: 'Padding is invalid and cannot be removed.' Searching on StackOverflow produces 57 questions concerning this exception; it's a very common problem encountered. So I decided to have a closer look. To test this, I created a simple project that decrypts and encrypts a byte array: // create some random data byte[] data = new byte[100]; new Random().NextBytes(data); // use the Rijndael symmetric algorithm RijndaelManaged rij = new RijndaelManaged(); byte[] encrypted; // encrypt the data using a CryptoStream using (var encryptor = rij.CreateEncryptor()) using (MemoryStream encryptedStream = new MemoryStream()) using (CryptoStream crypto = new CryptoStream( encryptedStream, encryptor, CryptoStreamMode.Write)) { crypto.Write(data, 0, data.Length); encrypted = encryptedStream.ToArray(); } byte[] decrypted; // and decrypt it again using (var decryptor = rij.CreateDecryptor()) using (CryptoStream crypto = new CryptoStream( new MemoryStream(encrypted), decryptor, CryptoStreamMode.Read)) { byte[] decrypted = new byte[data.Length]; crypto.Read(decrypted, 0, decrypted.Length); } Sure enough, I got exactly the same CryptographicException when trying to decrypt the data even in this simple example. Well, I'm obviously missing something, if I can't even get this single method right! What does the exception message actually mean? What am I missing? Well, after playing around a bit, I discovered the problem was fixed by changing the encryption step to this: // encrypt the data using a CryptoStream using (var encryptor = rij.CreateEncryptor()) using (MemoryStream encryptedStream = new MemoryStream()) { using (CryptoStream crypto = new CryptoStream( encryptedStream, encryptor, CryptoStreamMode.Write)) { crypto.Write(data, 0, data.Length); } encrypted = encryptedStream.ToArray(); } Aaaah, so that's what the problem was. The CryptoStream wasn't flushing all it's data to the MemoryStream before it was being read, and closing the stream causes it to flush everything to the backing stream. But why does this cause an error in padding? Cryptographic padding All symmetric encryption algorithms (of which Rijndael is one) operates on fixed block sizes. For Rijndael, the default block size is 16 bytes. This means the input needs to be a multiple of 16 bytes long. If it isn't, then the input is padded to 16 bytes using one of the padding modes. This is only done to the final block of data to be encrypted. CryptoStream has a special method to flush this final block of data - FlushFinalBlock. Calling Stream.Flush() does not flush the final block, as you might expect. Only by closing the stream or explicitly calling FlushFinalBlock is the final block, with any padding, encrypted and written to the backing stream. Without this call, the encrypted data is 16 bytes shorter than it should be. If this final block wasn't written, then the decryption gets to the final 16 bytes of the encrypted data and tries to decrypt it as the final block with padding. The end bytes don't match the padding scheme it's been told to use, therefore it throws an exception stating what is wrong - what the decryptor expects to be padding actually isn't, and so can't be removed from the stream. So, as well as closing the stream before reading the result, an alternative fix to my encryption code is the following: // encrypt the data using a CryptoStream using (var encryptor = rij.CreateEncryptor()) using (MemoryStream encryptedStream = new MemoryStream()) using (CryptoStream crypto = new CryptoStream( encryptedStream, encryptor, CryptoStreamMode.Write)) { crypto.Write(data, 0, data.Length); // explicitly flush the final block of data crypto.FlushFinalBlock(); encrypted = encryptedStream.ToArray(); } Conclusion So, if your padding is invalid, make sure that you close or call FlushFinalBlock on any CryptoStream performing encryption before you access the encrypted data. Flush isn't enough. Only then will the final block be present in the encrypted data, allowing it to be decrypted successfully.

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• Cloud Fact for Business Managers #3: Where You Data Is, and Who Has Access to It Might Surprise You

  - by yaldahhakim

  Written by: David Krauss While data security and operational risk conversations usually happen around the desk of a CCO/CSO (chief compliance and/or security officer), or perhaps the CFO, since business managers are now selecting cloud providers, they need to be able to at least ask some high-level questions on the topic of risk and compliance.  While the report found that 76% of adopters were motivated to adopt cloud apps because of quick access to software, most of these managers found that after they made a purchase decision their access to exciting new capabilities in the cloud could be hindered due to performance and scalability constraints put forth  by their cloud provider.  If you are going to let your business consume their mission critical business applications as a service, then it’s important to understand who is providing those cloud services and what kind of performance you are going to get.  Different types of departments, companies and industries will all have unique requirements so it’s key to take this also into consideration.   Nothing puts a CEO in a bad mood like a public data breach or finding out the company lost money when customers couldn’t buy a product or service because your cloud service provider had a problem.  With 42% of business managers having seen a data security breach in their department associated directly with the use of cloud applications, this is happening more than you think.   We’ve talked about the importance of being able to avoid information silos through a unified cloud approach and platform.  This is also important when keeping your data safe and secure, and a key conversation to have with your cloud provider.  Your customers want to know that their information is protected when they do business with you, just like you want your own company information protected.   This is really hard to do when each line of business is running different cloud application services managed by different cloud providers, all with different processes and controls.   It only adds to the complexity, and the more complex, the more risky and the chance that something will go wrong. What about compliance? Depending on the cloud provider, it can be difficult at best to understand who has access to your data, and were your data is actually stored.  Add to this multiple cloud providers spanning multiple departments and it becomes very problematic when trying to comply with certain industry and country data security regulations.  With 73% of business managers complaining that having cloud data handled externally by one or more cloud vendors makes it hard for their department to be compliant, this is a big time suck for executives and it puts the organization at risk. Is There A Complete, Integrated, Modern Cloud Out there for Business Executives?If you are a business manager looking to drive faster innovation for your business and want a cloud application that your CIO would approve of, I would encourage you take a look at Oracle Cloud.  It’s everything you want from a SaaS based application, but without compromising on functionality and other modern capabilities like embedded business intelligence, social relationship management (for your entire business), and advanced mobile.  And because Oracle Cloud is built and managed by Oracle, you can be confident that your cloud application services are enterprise-grade.  Over 25 Million users and 10 thousands companies around the globe rely on Oracle Cloud application services everyday – maybe your business should too.  For more information, visit cloud.oracle.com. Additional Resources •    Try it: cloud.oracle.com•    Learn more: http://www.oracle.com/us/corporate/features/complete-cloud/index.html•    Research Report: Cloud for Business Managers: The Good, the Bad, and the Ugly

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• Interactive Data Language, IDL: Does anybody care?

  - by Alex

  Anyone use a language called Interactive Data Language, IDL? It is popular with scientists. I think it is a poor language because it is proprietary (every terminal running it has to have an expensive license purchased) and it has minimal support (try searching for IDL, the language, right now on stack) . I am trying to convince my colleagues to stop using it and learn C/C++/Python/Fortran/Java/Ruby. Does anybody know about or even care about IDL enough to have opinions on it? What do you think of it? Should I tell my colleagues to stop wasting their time on it now? How can I convince them? Edit: People are getting the impression that I don't know or use IDL. Also, I said IDL has minimal support which is true in one sense, so I must clarify that the scientific libraries are indeed large. I use IDL all the time, but this is exactly the problem: I am only using IDL because colleagues use it. There is a file format IDL uses, the .sav, which can only be opened in IDL. So I must use IDL to work with this data and transfer the data back to colleagues, but I know I would be more efficient in another language. This is like someone sending you a microsoft word file in an email attachment and if you don't understand how wrong that is then you probably write too many words not enough code and you bought microsoft word. Edit: As an alternative to IDL Python is popular. Here is a list of The Pros of IDL (and the cons) from AstroBetter: Pros of IDL Mature many numerical and astronomical libraries available Wide astronomical user base Numerical aspect well integrated with language itself Many local users with deep experience Faster for small arrays Easier installation Good, unified documentation Standard GUI run/debug tool (IDLDE) Single widget system (no angst about which to choose or learn) SAVE/RESTORE capability Use of keyword arguments as flags more convenient Cons of IDL Narrow applicability, not well suited to general programming Slower for large arrays Array functionality less powerful Table support poor Limited ability to extend using C or Fortran, such extensions hard to distribute and support Expensive, sometimes problem collaborating with others that don’t have or can’t afford licenses. Closed source (only RSI can fix bugs) Very awkward to integrate with IRAF tasks Memory management more awkward Single widget system (useless if working within another framework) Plotting: Awkward support for symbols and math text Many font systems, portability issues (v5.1 alleviates somewhat) not as flexible or as extensible plot windows not intrinsically interactive (e.g., pan & zoom) Pros of Python Very general and powerful programming language, yet easy to learn. Strong, but optional, Object Oriented programming support Very large user and developer community, very extensive and broad library base Very extensible with C, C++, or Fortran, portable distribution mechanisms available Free; non-restrictive license; Open Source Becoming the standard scripting language for astronomy Easy to use with IRAF tasks Basis of STScI application efforts More general array capabilities Faster for large arrays, better support for memory mapping Many books and on-line documentation resources available (for the language and its libraries) Better support for table structures Plotting framework (matplotlib) more extensible and general Better font support and portability (only one way to do it too) Usable within many windowing frameworks (GTK, Tk, WX, Qt…) Standard plotting functionality independent of framework used plots are embeddable within other GUIs more powerful image handling (multiple simultaneous LUTS, optional resampling/rescaling, alpha blending, etc) Support for many widget systems Strong local influence over capabilities being developed for Python Cons of Python More items to install separately Not as well accepted in astronomical community (but support clearly growing) Scientific libraries not as mature: Documentation not as complete, not as unified Not as deep in astronomical libraries and utilities Not all IDL numerical library functions have corresponding functionality in Python Some numeric constructs not quite as consistent with language (or slightly less convenient than IDL) Array indexing convention “backwards” Small array performance slower No standard GUI run/debug tool Support for many widget systems (angst regarding which to choose) Current lack of function equivalent to SAVE/RESTORE in IDL matplotlib does not yet have equivalents for all IDL 2-D plotting capability (e.g., surface plots) Use of keyword arguments used as flags less convenient Plotting: comparatively immature, still much development going on missing some plot type (e.g., surface) 3-d capability requires VTK (though matplotlib has some basic 3-d capability)

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• Data won't save to SQL database, getting error "close() was never explicitly called on database"

  - by SnowLeppard

  I have a save button in the activity where the user enters data which does this: String subjectName = etName.getText().toString(); String subjectColour = etColour.getText().toString(); SQLDatabase entrySubject = new SQLDatabase(AddSubject.this); entrySubject.open(); entrySubject.createSubjectEntry(subjectName, subjectColour); entrySubject.close(); Which refers to this SQL database class: package com.***.schooltimetable; import android.content.ContentValues; import android.content.Context; import android.database.Cursor; import android.database.SQLException; import android.database.sqlite.SQLiteDatabase; import android.database.sqlite.SQLiteOpenHelper; public class SQLDatabase { public static final String KEY_SUBJECTS_ROWID = "_id"; public static final String KEY_SUBJECTNAME = "name"; public static final String KEY_COLOUR = "colour"; private static final String DATABASE_NAME = "Database"; private static final String DATABASE_TABLE_SUBJECTS = "tSubjects"; private static final int DATABASE_VERSION = 1; private DbHelper ourHelper; private final Context ourContext; private SQLiteDatabase ourDatabase; private static class DbHelper extends SQLiteOpenHelper { public DbHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); // TODO Auto-generated constructor stub } @Override public void onCreate(SQLiteDatabase db) { // TODO Auto-generated method stub db.execSQL("CREATE TABLE " + DATABASE_TABLE_SUBJECTS + " (" + KEY_SUBJECTS_ROWID + " INTEGER PRIMARY KEY AUTOINCREMENT, " + KEY_SUBJECTNAME + " TEXT NOT NULL, " + KEY_COLOUR + " TEXT NOT NULL);"); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { // TODO Auto-generated method stub db.execSQL("DROP TABLE IF EXISTS " + DATABASE_TABLE_SUBJECTS); onCreate(db); } } public SQLDatabase(Context c) { ourContext = c; } public SQLDatabase open() throws SQLException { ourHelper = new DbHelper(ourContext); ourDatabase = ourHelper.getWritableDatabase(); return this; } public void close() { ourHelper.close(); } public long createSubjectEntry(String subjectName, String subjectColour) { // TODO Auto-generated method stub ContentValues cv = new ContentValues(); cv.put(KEY_SUBJECTNAME, subjectName); cv.put(KEY_COLOUR, subjectColour); return ourDatabase.insert(DATABASE_TABLE_SUBJECTS, null, cv); } public String[][] getSubjects() { // TODO Auto-generated method stub String[] Columns = new String[] { KEY_SUBJECTNAME, KEY_COLOUR }; Cursor c = ourDatabase.query(DATABASE_TABLE_SUBJECTS, Columns, null, null, null, null, null); String[][] Result = new String[1][]; // int iRow = c.getColumnIndex(KEY_LESSONS_ROWID); int iName = c.getColumnIndex(KEY_SUBJECTNAME); int iColour = c.getColumnIndex(KEY_COLOUR); for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) { Result[0][c.getPosition()] = c.getString(iName); Result[1][c.getPosition()] = c.getString(iColour); Settings.subjectCount = c.getPosition(); TimetableEntry.subjectCount = c.getPosition(); } return Result; } This class has other variables and other variations of the same methods for multiple tables in the database, i've cut out the irrelevant ones. I'm not sure what I need to close and where, I've got the entrySubject.close() in my activity. I used the methods for the database from the NewBoston tutorials. Can anyone see what I've done wrong, or where my problem is? Thanks.

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• NSOperation unable to load data on the TableView

  - by yeohchan

  I have a problem in NSOperation. I tried many ways but it would run behind the screen, but will not make it appear on the my table view. Can anyone help me out with this. I am new to NSOperation. Recents.h #import <UIKit/UIKit.h> #import "FlickrFetcher.h" @interface Recents : UITableViewController { FlickrFetcher *fetcher; NSString *name; NSData *picture; NSString *picName; NSMutableArray *names; NSMutableArray *pics; NSMutableArray *lists; NSArray *namelists; NSOperationQueue *operationQueue; } @property (nonatomic,retain)NSString *name; @property (nonatomic,retain)NSString *picName; @property (nonatomic,retain)NSData *picture; @property (nonatomic,retain)NSMutableArray *names; @property (nonatomic,retain)NSMutableArray *pics; @property(nonatomic,retain)NSMutableArray *lists; @property(nonatomic,retain)NSArray *namelists; @end Recents.m #import "Recents.h" #import "PersonList.h" #import "PhotoDetail.h" @implementation Recents @synthesize picName,picture,name,names,pics,lists,namelists; // The designated initializer. Override if you create the controller programmatically and want to perform customization that is not appropriate for viewDidLoad. - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil { if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) { // Custom initialization self.title=@"Recents"; } return self; } - (void)beginLoadingFlickrData{ NSInvocationOperation *operation = [[NSInvocationOperation alloc] initWithTarget:self selector:@selector(synchronousLoadFlickrData) object:nil]; [operationQueue addOperation:operation]; [operation release]; } - (void)synchronousLoadFlickrData{ fetcher=[FlickrFetcher sharedInstance]; NSArray *recents=[fetcher recentGeoTaggedPhotos]; [self performSelectorOnMainThread:@selector(didFinishLoadingFlickrDataWithResults:) withObject:recents waitUntilDone:NO]; } - (void)didFinishLoadingFlickrDataWithResults:(NSArray *)recents{ for(NSDictionary *dic in recents){ [names addObject:[fetcher usernameForUserID:[dic objectForKey:@"owner"]]]; if([[dic objectForKey:@"title"]isEqualToString:@""]){ [pics addObject:@"Untitled"]; }else{ [pics addObject:[dic objectForKey:@"title"]]; } NSLog(@"OK!!"); } [self.tableView reloadData]; [self.tableView flashScrollIndicators]; } // Implement viewDidLoad to do additional setup after loading the view, typically from a nib. - (void)viewDidLoad { [super viewDidLoad]; operationQueue = [[NSOperationQueue alloc] init]; [operationQueue setMaxConcurrentOperationCount:1]; [self beginLoadingFlickrData]; self.tableView.rowHeight = 95; } /* // Override to allow orientations other than the default portrait orientation. - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { // Return YES for supported orientations return (interfaceOrientation == UIInterfaceOrientationPortrait); } */ - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewDidUnload { // Release any retained subviews of the main view. // e.g. self.myOutlet = nil; } - (void)dealloc { [super dealloc]; } #pragma mark - #pragma mark Table View Data Source Methods - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return[names count]; } - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { static NSString *SimpleTableIdentifier = @"SimpleTableIdentifier"; UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:SimpleTableIdentifier]; if (cell == nil) { cell = [[[UITableViewCell alloc]initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:SimpleTableIdentifier] autorelease]; } cell.detailTextLabel.text=[names objectAtIndex:indexPath.row]; cell.textLabel.text=[pics objectAtIndex:indexPath.row]; //UIImage *image=[UIImage imageWithData:[self.lists objectAtIndex:indexPath.row]]; //cell.imageView.image=image; return cell; } - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { fetcher=[[FlickrFetcher alloc]init]; PhotoDetail *scroll=[[PhotoDetail alloc]initWithNibName:@"PhotoDetail" bundle:nil]; scroll.titleName=[self.pics objectAtIndex:indexPath.row]; scroll.picture = [UIImage imageWithData:[self.lists objectAtIndex:indexPath.row]]; [self.navigationController pushViewController:scroll animated:YES]; }

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• Android SQLlite crashes after trying retrieving data from it

  - by Pavel

  Hey everyone. I'm kinda new to android programming so please bear with me. I'm having some problems with retrieving records from the db. Basically, all I want to do is to store latitudes and longitudes which GPS positioning functions outputs and display them in a list using ListActivity on different tab later on. This is how the code for my DBAdapter helper class looks like: public class DBAdapter { public static final String KEY_ROWID = "_id"; public static final String KEY_LATITUDE = "latitude"; public static final String KEY_LONGITUDE = "longitude"; private static final String TAG = "DBAdapter"; private static final String DATABASE_NAME = "coords"; private static final String DATABASE_TABLE = "coordsStorage"; private static final int DATABASE_VERSION = 1; private static final String DATABASE_CREATE = "create table coordsStorage (_id integer primary key autoincrement, " + "latitude integer not null, longitude integer not null);"; private final Context context; private DatabaseHelper DBHelper; private SQLiteDatabase db; public DBAdapter(Context ctx) { this.context = ctx; DBHelper = new DatabaseHelper(context); } private static class DatabaseHelper extends SQLiteOpenHelper { DatabaseHelper(Context context) { super(context, DATABASE_NAME, null, DATABASE_VERSION); } @Override public void onCreate(SQLiteDatabase db) { db.execSQL(DATABASE_CREATE); } @Override public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) { Log.w(TAG, "Upgrading database from version " + oldVersion + " to " + newVersion + ", which will destroy all old data"); db.execSQL("DROP TABLE IF EXISTS titles"); onCreate(db); } } //---opens the database--- public DBAdapter open() throws SQLException { db = DBHelper.getWritableDatabase(); return this; } //---closes the database--- public void close() { DBHelper.close(); } //---insert a title into the database--- public long insertCoords(int latitude, int longitude) { ContentValues initialValues = new ContentValues(); initialValues.put(KEY_LATITUDE, latitude); initialValues.put(KEY_LONGITUDE, longitude); return db.insert(DATABASE_TABLE, null, initialValues); } //---deletes a particular title--- public boolean deleteTitle(long rowId) { return db.delete(DATABASE_TABLE, KEY_ROWID + "=" + rowId, null) 0; } //---retrieves all the titles--- public Cursor getAllTitles() { return db.query(DATABASE_TABLE, new String[] { KEY_ROWID, KEY_LATITUDE, KEY_LONGITUDE}, null, null, null, null, null); } //---retrieves a particular title--- public Cursor getTitle(long rowId) throws SQLException { Cursor mCursor = db.query(true, DATABASE_TABLE, new String[] { KEY_ROWID, KEY_LATITUDE, KEY_LONGITUDE}, KEY_ROWID + "=" + rowId, null, null, null, null, null); if (mCursor != null) { mCursor.moveToFirst(); } return mCursor; } //---updates a title--- /*public boolean updateTitle(long rowId, int latitude, int longitude) { ContentValues args = new ContentValues(); args.put(KEY_LATITUDE, latitude); args.put(KEY_LONGITUDE, longitude); return db.update(DATABASE_TABLE, args, KEY_ROWID + "=" + rowId, null) 0; }*/ } Now my question is - am I doing something wrong here? If yes could someone please tell me what? And how I should retrieve the records in organised list manner? Help would be greatly appreciated!!

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• many-to-many-to-many, incl alignment of data from diff sources

  - by JefeCoon

  Re-factoring dbase to support many:many:many. At the second and third levels we need to preserve end-user 'mapping' or aligning of data from different sources, e.g. Order 17 FirstpartyOrderID => aha LineItem_for_BigShinyThingy => AA-1 # maps to 77-a LineItem_for_BigShinyThingy => AA-2 # maps to 77-b, 77-c LineItem_for_LittleWidget => AA-x # maps to 77-zulu, 77-alpha, 99-foxtrot LineItem_for_LittleWidget => AA-y # maps to 77-zulu, 99-foxtrot LineItem_for_LittleWidget => AA-z # maps to 77-alpha ThirdpartyOrderID => foo LineItem_for_BigShinyThingy => 77-a LineItem_for_BigShinyThingy => 77-b LineItem_for_BigShinyThingy => 77-c LineItem_for_LittleWidget => 77-zulu LineItem_for_LittleWidget => 77-alpha ThirdpartyOrderID => bar LineItem_for_LittleWidget => 99-foxtrot Each LineItem has daily datapoints reported from its own source (Firstparty|Thirdparty). In our UI & app we provide tools to align these, then we'd like to save them into the cleanest possible schema for querying, enabling us to diff the reported daily datapoints, and perform other daily calculations (which we'll store in the dbase also, fortunately that should be cake once we've nailed this). We need to map related [firstparty|thirdparty]line_items which have their own respective datapoints. We'll be using the association to pull each line_items collection of datapoints for summary and discrepancy calculations. I'm considering two options, std has_many,through x2 --or-- possibly (scary) ubermasterjoin table OptionA: order<<-->> order_join_table[id,order_id,firstparty_order_id,thirdparty_order_id] <<-->>line_item order_join_table[firstparty_order_id]-->raw_order[id] order_join_table[thirdparty_order_id]-->raw_order[id] raw_order-->raw_line_items[raw_order_id] line_item<<-->> line_item_join[id,LI_join_id,firstparty_LI,thirdparty_LI <<-->>raw_line_items line_item_join[firstparty_LI]-->raw_line_item[id] line_item_join[thirdparty_LI]-->raw_line_item[id] raw_line_item<<-->>datapoints = we rely upon join to store all mappings of first|third orders & line_items = keys to raw_* enable lookup of these order & line_item details = concerns about circular references and/or lack of correct mapping logic, e.g order--line_item--raw_line_items vs. order--raw_order--raw_line_items OptionB: order<<-->> join_master[id,order_id,FP_order_id,TP_order_id,FP_line_item_id,TP_line_item_id] join_master[FP_order_id & TP_order_id]-->raw_order[id] join_master[FP_line_item_id & TP_line_item_id]-->raw_line_item[id] = every combo of FP_line_item + TP_line_item writes a record into the join_master table = "theoretically" queries easy/fast/flexible/sexy At long last, my questions: a) any learnings from painful firsthand experience about how best to implement/tune/optimize many-to-many-to-many relationships b) in rails? c) any painful gotchas (circular references, slow queries, spaghetti-monsters) to watch out for? d) any joy & goodness in Rails3 that makes this magically easy & joyful? e) anyone written the "how to do many-to-many-to-many schema in Rails and make it fast & sexy?" tutorial that I somehow haven't found? If not, I'll follow up with our learnings in the hope it's helpful.. Thanks in advance- --Jeff

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• Help passing _POST Form Data PHP

  - by Mikey1980

  I apologize in advance, I am a PHP noob! I have form with some hidden fields. I need the values to POST to "submit_rma.php" so that they're not missing from the db--I need $qty, $estmate_id and $rma_type. The rest of the fields are just displaying data for the user and are readonly. Currently I only get value from the qty text field. Is there any easier way to pass these values? URL is out of the question due to security issues. <form method="post" action="submit_rma.php";> <table> <tr> <td> Quantity </td> <td> <input type="text" name="qty" value="<?php echo $qty ?>" size="1"/><br/> </td> </tr> <tr> <td> Part # </td> <td> <input type="text" name="" value="<?php echo $model ?>" size="8" READONLY/><br/> </td> </tr> <tr> <td> Description </td> <td> <input type="text" name="" value="<?php echo $name_EN ?>" size="50" READONLY/><br/> </td> </tr> <tr> <td> Paid Date </td> <td> <input type="text" name="" value="<?php echo $sold_date ?>" size="6" READONLY/><br/> </td> </tr> <tr> <td> Amount Each </td> <td> <input type="text" name="" value="<?php echo $dealer_price ?>" size="8" READONLY/> </td> </tr> </table> <input type="hidden" name="estmate_id" value="<?php echo $estmate_id ?>"> <input type="hidden" name="rma_type" value="Short Shipped"> <input type="submit" name="submit";"> </form>

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• DataGrid : Binding with two different classes with lists ? WPF C#

  - by MyRestlessDream

  It is my first question on StackOverflow so I hope I am doing nothing wrong ! Sorry if it is the case ! I need some help because I can not find the solution of my problem. Of course I have searched everywhere on the web but I can not find it (can not post the links that I am using because of my low reputation :( ). Moreover, I am new in C# and WPF (and self-learning). I used to work in C++/Qt so I do not know how everything works in WPF. And sorry for my English, I am French. My problem My basic classes are that an Employee can use a computer. The id of the computer and the date of use are stored into the class Connection. I would like to display the list information in a DataGrid and in RowDetailsTemplate like here : http://i.stack.imgur.com/Bvn1z.png So it will do a binding to the Employee class but also to the Connection class with only the last value of the property (here the last value of the list "Computer ID" and the last value of the list "Connection Date" on this last computer). So it is a loop in the different lists. How can I do it ? Is it too much to do ? :( I succeed to get the Employee informations but I do not know how to bind the list of computer. When I am trying, it shows me "(Collection)" so it does not go inside the list :( Summary of Questions How to display/bind a value from a list AND from a different class in a DataGrid ? How to display all the values of a list into the RowDetailsTemplate ? Under Windows 7 and Visual Studio 2010 Pro version. ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ EDIT ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Solution I have used the solution of Stefan Denchev. Here the modification of my class : http://i.stack.imgur.com/Ijx5i.png And the code used: <DataGrid ItemsSource="{Binding}" Name="table"> <DataGrid.Columns> <DataGridTextColumn Header="First Name" Binding="{Binding FirstName}"/> <DataGridTextColumn Header="Last Name" Binding="{Binding LastName}"/> <DataGridTextColumn Header="Gender" Binding="{Binding Gender}"/> <DataGridTextColumn Header="Last computer used" Binding="{Binding LastComputerID}"/> <DataGridTextColumn Header="Last connection date" Binding="{Binding LastDate}"/> </DataGrid.Columns> <DataGrid.RowDetailsTemplate> <DataTemplate> <DataGrid ItemsSource="{Binding ListOfConnection}"> <DataGrid.Columns> <DataGridTextColumn Header="Computer ID" Binding="{Binding ComputerID}"/> <DataGridTemplateColumn> <DataGridTemplateColumn.CellTemplate> <DataTemplate> <ListView ItemsSource="{Binding ListOfDate}"/> </DataTemplate> </DataGridTemplateColumn.CellTemplate> </DataGridTemplateColumn> </DataGrid.Columns> </DataGrid> </DataTemplate> </DataGrid.RowDetailsTemplate> </DataGrid> With in code behind : List<Employee> allEmployees = WorkflowMgr.Instance.AllEmployees; table.DataContext = allEmployees; And it works ! I have tryed to improve my fake example :) Hope it will help to another developer !

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• Replace html element with data in javascript

  - by Ultimate

  I trying to auto increment the serial number when row increases and automatically readjust the numbering order when a row gets deleted in javascript. For that I am using the following clone method for doing my task. Rest of the thing is working correct except its not increasing the srno because its creating the clone of it. Following is my code for this: function addCloneRow(obj) { if(obj) { var tBody = obj.parentNode.parentNode.parentNode; var trTable = tBody.getElementsByTagName("tr")[1]; var trClone = trTable.cloneNode(true); if(trClone) { var txt = trClone.getElementsByTagName("input"); var srno = trClone.getElementsByTagName("span"); var dd = trClone.getElementsByTagName("select"); text = tBody.getElementsByTagName("tr").length; alert(text) //here i am getting the srno in increasing order //I tried something like following but not working //var ele = srno.replace(document.createElement("h1"), srno); //alert(ele); for(var i=0; i<dd.length; i++) { dd[i].options[0].selected=true; var nm = dd[i].name; var nNm = nm.substring((nm.indexOf("_")+1),nm.indexOf("[")); dd[i].name = nNm+"[]"; } for(var j=0; j<txt.length; j++) { var nm = txt[j].name; var nNm = nm.substring((nm.indexOf("_")+1),nm.indexOf("[")); txt[j].name = nNm+"[]"; if(txt[j].type == "hidden"){ txt[j].value = "0"; }else if(txt[j].type == "text") { txt[j].value = ""; }else if(txt[j].type == "checkbox") { txt[j].checked = false; } } for(var j=0; j<txt.length; j++) { var nm = txt[j].name; var nNm = nm.substring((nm.indexOf("_")+1),nm.indexOf("[")); txt[j].name = nNm+"[]"; if(txt[j].type == "hidden"){ txt[j].value = "0"; }else if(txt[j].type == "text") { txt[j].value = ""; }else if(txt[j].type == "checkbox") { txt[j].checked = false; } } tBody.insertBefore(trClone,tBody.childNodes[1]); } } } Following is my html : <table id="step_details" style="display:none;"> <tr> <th width="5">#</th> <th width="45%">Step details</th> <th>Expected Results</th> <th width="25">Execution</th> <th><img src="gui/themes/default/images/ico_add.gif" onclick="addCloneRow(this);"/></th> </tr> <tr> <td><span>1</span></td> <td><textArea name="step_details[]"></textArea></td> <td><textArea name="expected_results[]"></textArea></td> <td><select onchange="content_modified = true" name="exec_type[]"> <option selected="selected" value="1" label="Manual">Manual</option> <option value="2" label="Automated">Automated</option> </select> </td> <td><img src="gui/themes/default/images/ico_del.gif" onclick="removeCloneRow(this);"/></td> </tr> </table> I want to change the srno. of span element dynamically after increment and decrement on it. Need help thanks

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