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• SQL Query: Using IF statement in defining new field

  - by Tofig Hasanov

  I have a table with many fields and additionally several boolean fields (ex: BField1, BField2, BField3 etc.). I need to make a Select Query, which will select all fields except for boolean ones, and a new virtual field (ex: FirstTrueBool) whose value will equal to the name of the first TRUE Boolean Field. For ex: Say I have BField1 = False, BField2 = True, BField3 = true, BField4=false, in that case SQL Query should set [FirstTrueBool] to "BField2". Is that possible? Thank you in advance. P.S. I use Microsoft Access (MDB) Database and Jet Engine.

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• .htaccess stupid issue

  - by justnoone

  I have a server where I can only configure httpd using .htaccess, a cannot access global configuration. I want to rewrite almost every non-existing path to index.php, so I did something like: RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteRule ^(.*)$ index.php?path=$1 [L,QSA] And that is ok. But another thing I want to do is to prevent access to path where I keep PHP files (I cannot store them somewhere else) which is for example /php. I would like that anything starting with /php rewrites to index.php?path=php... so I did something like: RewriteCond %{REQUEST_URI} ^/php.* RewriteRule ^(.*)$ /index.php?path=$1 [L,QSA] And that also would work ok if I had access to global configuration. In case of per-directory configuration, when I access /php it rewrites it to index.php?path=php and than puts directory name before that: /php/index.php?path=php. I read documentation and I realize that it uses internal redirects when per-directory confoguration is used. How can I avoid this behavior?

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• Handling download abort in PHP

  - by Aron Rotteveel

  Is it somehow possible to handle a download abort in PHP? In this specific case I am not speaking of a connection abort, but handling the event that triggers when the 'cancel' button in the browser download dialog button is clicked. Since this dialog already interprets the headers of the file that is to be download but does not actually start the download, it only seems logical there should be some way to catch this. Small (pseudo) code example to clear things up: // set some headers header('...'); // Question: what happens between the part where the headers are sent // and the actual data is being outputted to the client? IE: this is the part // where the download dialog should show up // Logical question that follows is: is there a way to detect a 'cancel'? $filename = '/some/file.txt'; $handle = fopen($filename, 'rb'); // output data to client while (!feof($handle)) { echo fread($handle, 8096); } fclose($handle);

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• conceptually different entities with a few similar properties should be stored in one table or more?

  - by Haghpanah

  Assume A and B are conceptually different entities that have a few similar properties and of course their own specific properties. In database design, should I put those two entities in one big aggregated table or two respectively designed tables. For instance, I have two types of payment; Online-payment and Manual-payment with following definition, TABLE [OnlinePayments] ( [ID] [uniqueidentifier], [UserID] [uniqueidentifier], [TrackingCode] [nvarchar](32), [ReferingCode] [nvarchar](32), [BankingAccID] [uniqueidentifier], [Status] [int], [Amount] [money], [Comments] [nvarchar](768), [CreatedAt] [datetime], [ShopingCartID] [uniqueidentifier], ) And TABLE [ManualPayments] ( [ID] [uniqueidentifier], [UserID] [uniqueidentifier], [BankingAccID] [uniqueidentifier], [BankingOrgID] [uniqueidentifier], [BranchName] [nvarchar](64), [BranchCode] [nvarchar](16), [Amount] [money], [SlipNumber] [nvarchar](64), [SlipImage] [image], [PaidAt] [datetime], [Comments] [nvarchar](768), [CreatedAt] [datetime], [IsApproved] [bit], [ApprovedByID] [uniqueidentifier], ) One of my friends told me that creating two distinct tables for such similar entities is not a well design method and they should be put in one single table for the sake of performance and ease of data manipulations. I’m now wondering what to do? What is the best practice in such a case?

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• Image processing custom filter 7 by 7

  - by ladiesMan217

  Lets say I have a 7 by 7 neighborhood around a pixel that looks like this 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 and I wanna filter the above by replacing the pixel p by the average of those pixels whose value lie in the range -10<=p_value <=10. I am new to image processing and I think in this case p_value is 25 and around 25 that are many pixel values in that range but don't exactly know to construct a convolution filter out of it.

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• problem with iOS 4.2 when user press the list view item to go to UIwebview page and the navigation button disappears on the second visit

  - by seahorse

  My app is a Navigation based application. The main menu contains the list view items. if I clicks one of them, it goes to next view which in this case take me to UIwebview embedded web site. Everything is looking great. I can view the content of web page, the navigation control back button which takes to the main menu if I press it. However, I'm having issue when I try to go back to main menu if i visit that subview the second time. It loads the content of UIwebview web page, but the navigation button is gone and won't let me go back to main menu. This problem only appears on latest iOS 4.2 version. Otherwise it works great on 3.1 to 4.1. I would appreciate any hints or inputs. Note this seems not working for subview using UIWebview embedded web content. I don't have any issue with other subviews

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• select columns by a concat text as columnname in oracle

  - by glaudiston

  I have a table with columns named with the number of hour of day like this: col00 NUMBER(5) col01 NUMBER(5) col02 NUMBER(5) ... col23 NUMBER(5) ...and I have another query that returns a count by hour. I want to recover the colXX value by hour.... then I can recover with "decode" or "case when..." but I want know if exists any way to recover the column by a text like this: select "col"||hour from table; in the hypothetical above example if hour is 13 then would be translated like: select col13 from table; there is any way to do this ?

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• Information stored in a cookie file

  - by jklmuk

  Thanks for you help in advance. I am trying to figure out the structure of the cookie file, more specifically i want to be able to determine the expiry time. From the cookies i have created they all appear to be in a standard format. Name, Value, website,followed by 5 numbers and a star. See example below. name value www.website.co.uk/ 1536 3041141504 30135951 1632526096 30135949 * Obviously the expiry time is one of the numbers, the question is which one. From experiments I have determined that the first and fifth number don't seem to change. In a case where i generated three cookies at the same time with a 1000 second time difference i noticed that the fourth number appeared to increase by 2000 suggesting that this has a connection with the expiry time. Can anyone confirm if i am heading in the right direction? And does any one know how i convert this to a human time and date(preferably in php but any language would give me a starting point) thanks Jason

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• How might you unobtrusively enhance the jQuery Datepicker class?

  - by Teflon Ted

  You can pass special strings into jQuery's Datepicker class setDate() method like "+7" which will be translated into "7 days from today": http://docs.jquery.com/UI/Datepicker#method-setDate But you can't get that "+7" back out. When you call getDate() you get the calculated resulting date. I have a use case where I need to pull out the special string "+7" for propagation. One chunk of code is passing a special string into the Datepicker and passing the Datepicker over to another chunk of code which pulls out the date, but the latter sometimes needs to know the special string rather than the calculated date. So I need to enhance the Datepicker tool to (a) store the special code internally and (b) expose it via a method like getOriginallyPassedInDate() or some such. I'm not a jQuery/Javascript ninja so I could really use some guidance on how I might preferably-unobtrusively add the necessary functionality to the Datepicker class, the way you might monkey-patch an object in Ruby I'm guessing.

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• How do you manage web navigation info in your application?

  - by Dave

  I’m building an application where different users will have different menu items available to them depending on what they’ve paid for. There will also be multiple levels to the menu hierarchy. What’s the best approach to this problem? I’m assuming I need a database table that represents the menu hierarchy, including the parent-child relationships of the nodes in the navigation as well as the sorting of the items. Then another table which I use to manage whether a user is authorized to access a particular item in that table. When I render the view, I’d reference the menus, and the access rights of the user to output the menu, and I’d also need a function to check that same authorization from each controller in case a user manually types in a URL of a controller they’re not supposed to have access to. Is this the right approach? Any suggestions for caching this to prevent the constant look-ups of this type of info? I’m open to any suggestions on how you may have approached this type of requirement.

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• Visual Studio add-in to support images inline with source?

  - by Jesse Stimpson

  We use Visual Studio 2005 here, and in an attempt to improve the documentation of our source, we're looking for a Visual Studio add-in that will allow images to be viewed in line with source from within the IDE. For example, the use case I'd like to fit is the following: In the directory in which my source lives, I save my image file my_image.png. In the source file, I write a comment of the form /// @image my_image.png The add-in allows me to toggle between seeing the text /// @image my_image.png and viewing the actual image within the code editing window, inline with whatever source surrounds it. Does anyone know of an existing add-in for VS 2005? If not, does the VS add-in api allow for such functionality? Thanks!

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• How to Vertically Center Images on a Line?

  - by jeremy

  What's the best way to center icons on a line when the images are smaller than the line height? For example (styles inline for easier reading): <div style="line-height: 20px"> <img style="width: 12px; height: 12px;"/> Blah blah blah </div> Here's a jsFiddle example. This example also shows why vertical-align: middle does not work. I want the img to be centered against the text of the div. That is, even if the text wrapped to multiple lines, the image would be centered against a single line. Ideally, the solution would not involve setting margings/paddings on the image and would work even if I didn't know the line-height. Things I've read: How do I vertically align text next to an image with CSS? (deals with case where image is larger, doesn't seem to apply here) Understanding vertical-align

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• How to dynamically load and switch the resource file in the web app (ASP.NET) without recompiling ?

  - by Thomas Wanner

  I would like to store the resource files (containing texts for labels etc.) for my web application in the database to be able to edit and create them dynamically later (probably in the UI). My idea was to store the whole resx file in an xml column and simply load it on demand - depending on the language and some other attributes of the current user when he is logging into the application or switching the context. The important thing is that the resources do not only depend on the culture info of the user but also on some context information that can be switched by user without logging off and on again (in our case called "group", not having anything to do with a group of users). Is it possible somehow to load the contents of the resources from an external source and simply switch them without web application being recompiled by the server ? I know that there are some interfaces on which I could hook up and implement a custom resources provider which reads from the database directly but if it could work somehow with the resx files it would probably make things a lot easier..

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• Detecting coincident subset of two coincident line segments

  - by Jared Updike

  This question is related to: How do I determine the intersection point of two lines in GDI+? (great explanation of algebra but no code) How do you detect where two line segments intersect? (accepted answer doesn't actually work) But note that an interesting sub-problem is completely glossed over in most solutions which just return null for the coincident case even though there are three sub-cases: coincident but do not overlap touching just points and coincident overlap/coincident line sub-segment For example we could design a C# function like this: public static PointF[] Intersection(PointF a1, PointF a2, PointF b1, PointF b2) where (a1,a2) is one line segment and (b1,b2) is another. This function would need to cover all the weird cases that most implementations or explanations gloss over. In order to account for the weirdness of coincident lines, the function could return an array of PointF's: zero result points (or null) if the lines are parallel or do not intersect (infinite lines intersect but line segments are disjoint, or lines are parallel) one result point (containing the intersection location) if they do intersect or if they are coincident at one point two result points (for the overlapping part of the line segments) if the two lines are coincident

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• Alter text field focus order with jQuery

  - by Akinator

  Hi, I was wondering, if I have text fields displayed so, could I alter the order in which the focus using javascript (preferably jQuery). See this example here. What I mean that when you tab around them, instead on going "one, two, three, four, five" force them to go: "one, two, four, three, five". Thanks in advance!! EDIT: Thanks to all, I didn´t know it was possible with HTML only. Of course if this is the case I´ll go with that. BTW Thanks to all your answers!!! (I`ll upvote the complete ones) but will accept the first one.

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• GWT celltable Simple pager Next and previous buttons

  - by Saritha

  I am working on a CellTable with a SimplePager. My paging works fine in the sense when i set the page size to be 5 only 5 records are being displayed. My question is that do next and previous buttons come by default or do we have to configure them. I have seen the show case example code and i do not see any external configurations . my SimplePager code is as follows: //create pager SimplePager.Resources resources = GWT.create(SimplePager.Resources.class); SimplePager simplePager = new SimplePager(TextLocation.CENTER, resources , false, 0, true); simplePager.setDisplay(cellTableSearchResults); simplePager.setPageSize(5); // create data provider ListDataProvider<GridDTO> dataProvider = new ListDataProvider<GridDTO>(); dataProvider.addDataDisplay(cellTableSearchResults); dataProvider.setList(components); Please help.

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• Escaping if/else in Jade template

  - by Collin Estes

  So I have a simply block of html in my jade template with a loop: each dude, i in dudes div(class='someClass') div.otherStuff span.someContent #{name} I want to apply a data attribute to my top most div when a certain looping condition is met, in this case the first dude, I set it up like this each dude, i in dudes if i == 0 div(class='someClass, data-someAttr='first dude') else div(class='someClass') div.otherstuff span.someContent Setup like this it causes the div.otherStuff div and the span.someContent to only display on the else condition. I've moved the tab spaces around on those items but I can't get it escape that else and give the div.otherStuff and span.someContent to both the first dude and the subsequent dudes after that. I've also tried setting that data attr to a variable and trying to apply it that way but without any success. What I end up doing to get around it is this: each dude, i in dudes if i == 0 div(class='someClass, data-someAttr='first dude') div.otherstuff span.someContent else div(class='someClass') div.otherstuff span.someContent How do I escape that if/else so I dont have to duplicate the div.otherStuff and span.someContent?

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• Restructured Text - adding title attributes to links

  - by Ant

  Hi all, I am trying to use a jquery lightbox implementation on my website that is generated from Restructured Text. The lightbox takes the title of the link around the images as the caption of the image in the lightbox display. However, I can't seem to find a way in Restructured Text of providing a title attribute on a link - does anyone know of a way of doing so. My Images are defined like so: .. image:: image001.thumb.jpg :alt: Some alt text here :target: image001.jpg So I can add an alt attribute, but not a title. A possible alternative may be to use a target as the reference like so: .. image:: image001.thumb.jpg :alt: Some alt text here :target: image1_ .. _image1: image001.jpg In this latter case, I am not sure how to add attributes to the link defined at the bottom (if it is possible at all)

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• SELECT only a certain set of rows at a time

  - by prmatta

  I need to select data from one table and insert it into another table. Currently the SQL looks something like this: INSERT INTO A (x, y, z) SELECT x, y, z FROM B b WHERE ... However, the SELECT is huge, resulting in over 2 millions rows and we think it is taking up too much memory. Informix, the db in this case, runs out of virtual memory when the query is run. How would I go about selecting and inserting a set of rows (say 2000)? Given that I don't think there are any row ids etc.

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• Linq to xml : can't load all elements

  - by aleo

  hello i'm trying to load some elements from a xml file. but it XDocument.Load seems not treating xml file properly in this case, the method returns the content of the xml file as one node. here is my xml content: <processes> <process>winamp</process> <process>Acrobat</process> <process>WinRAR</process> </processes> and the code that reads the file: XDocument loaded = XDocument.Load("/process_list.xml"); var x = from a in loaded.Descendants("processes") select a.Element("process"); foreach (var t in x) { Console.WritleLine(t.Value.ToString()); } thank you

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• How to find the duplicate and highest value in an array

  - by Jerry

  Hello guys I have an array like this array={'a'=>'2','b'=>'5', 'c'=>'6', 'd'=>'6', 'e'=>'2'}; The array value might be different depending on the $_POST variables. My question is how to find the highest value in my array and return the index key. In my case, I need to get 'c' and 'd' and the value of 6. Not sure how to do this. Any helps would be appreciated. Thanks.

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• How can I Submit client side answers (to a question) to the server using JAVA?

  - by mdrafi

  How can I Submit client side computer user's answers(to a multiple choice question) to the server using JAVA I have a centralized server and about 1000 client systems. In these 1000 systems students take multiple choice quiz at at time (in some 2 hrs time). Now i've to send all these answers of these questions to the server in an asynchronous threaded queue when the student answer each question (all 1000 students) Also client have to wait if the server connection is a failure, in this case students should be able to continue taking quiz/exam. When I get the connection these answers in queue should be submitted to the server system. How can I solve this problem? Please suggest/help me in this.

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• is there a way to use cin.getline() without having to define a char array size before hand?

  - by zebraman

  Basically my task is having to sort a bunch of strings of variable length ignoring case. I understand there is a function strcasecmp() that compares cstrings, but doesn't work on strings. Right now I'm using getline() for strings so I can just read in the strings one line at a time. I add these to a vector of strings, then convert to cstrings for each call of strcasecmp(). Instead of having to convert each string to a cstring before comparing with strcasecmp(), I was wondering if there was a way I could use cin.getline() for cstrings without having a predefined char array size. Or, would the best solution be to just read in string, convert to cstring, store in vector, then sort?

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• How to get ip address programactically on Debian based system?

  - by gc

  I'm trying to retrieve the ip address of the local machine in my program. The OS running is Ubuntu 8.10. I tried using gethostname() and gethostbyname to do it. All I can get is 127.0.1.1. I learned that it seems to be a Debian thing: This thread explained it. The content of my /etc/hosts file is also: 127.0.0.1 localhost 127.0.1.1 mymachine In this case, is there any other way to programactically (prefer C or C++) to get the ip address without modifying the system file on the machine? Thanks in advance. g.c.

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• How to create a lookup column that targets a Doc Lib and uses the 'Name' of the document?

  - by stlawrence

  How do you create a lookup column to a Document Library that uses the 'Name' of the document as the lookup value? I found a blog post that recommends adding another custom field like "FileName" and then using a item reciever to populate the custom field with the value from the Name field but that seems cheesy. Link to the blog in case people are interested: http://blogs.msdn.com/pranab/archive/2008/01/08/sharepoint-2007-moss-wss-issue-with-lookup-column-to-doc-lib-name-field.aspx I've got a bunch of custom document content types that I dont want to clutter with a work around that should really work anyway.

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