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• Unique identification string in php

  - by NardCake

  Currently me and my friend are developing a website, for what we will call 'projects' we just have a basic auto increment id in the database used to navigate to projects such as oururl.com/viewproject?id=1 but we started thinking, if we have alot of posted projects thats going to be a LONG url. So we need to somehow randomly generate a alphanumerical string about 6 characters long. We want the chance of the string being duplicated being extremely low and of course we will query the database before assigning an identifier. Thanks for anyhelp, means alot!

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• Determining if a div contains a table element in JQuery

  - by fishiefishie

  For my accordion, each time the user clicks on the header, i want to see if accordion-content contains a table, if not, generate one and add it to accordion-content. But how do you check if the current element contains a certain type of element? <div class="a-header"> <ul><li></li></ul> </div> <div class="a-content"> </div> $('.a-header').click(function(){ var currentHeader = $(this).next(); //if currentHeader contains 'table' }); Thanks.

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• I want to make a 2D color plot showing stress magnitude (S) at very loctaion (x, y) based on continuous color change using limited data sets

  - by Alex Liu

  friends, I have to trouble you as I couldn't find a solution after trying for a long time. I have 3 columns of data. x, y, and the stress value (S) at every point (x, y). I want to generate a 2D color plot displaying continuous color change with the magnitude of the stress (S). The stress values increase from -3*10^4 Pa to 4*10^4 Pa. I only have hundreds of data sets for an area, but I want to see the stress magnitude (read from the color) at every location (x, y). What Matlab command should I use? Thank you very much! I want to make a 2D color plot showing stress magnitude (S) at very loctaion (x, y) based on continuous color change using limited

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• Selecting a sequence NEXTVAL for multiple rows

  - by stringpoet

  I am building a SQL Server job to pull data from SQL Server into an Oracle database through a linked server. The table I need to populate has a sequence for the name ID, which is my primary key. I'm having trouble figuring out a way to do this simply, without some lengthy code. Here's what I have so far for the SELECT portion (some actual names obfuscated): SELECT (SELECT NEXTVAL FROM OPENQUERY(MYSERVER, 'SELECT ORCL.NAME_SEQNO.NEXTVAL FROM DUAL')), psn.BirthDate, psn.FirstName, psn.MiddleName, psn.LastName, c.REGION_CODE FROM Person psn LEFT JOIN MYSERVER..ORCL.COUNTRY c ON c.COUNTRY_CODE = psn.Country MYSERVER is the linked Oracle server, ORCL is obviously the schema. Person is a local table on the SQL Server database where the query is being executed. When I run this query, I get the same exact value for all records for the NEXTVAL. What I need is for it to generate a new value for each returned record. I found this similar question, with its answers, but am unsure how to apply it to my case (if even possible): Query several NEXTVAL from sequence in one satement

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• Is there any way to use imagegrabwindow() with Firefox or Chrome?

  - by patternsofchaos

  I'm trying to generate website thumbnails programatically in PHP. To do this, I'm using imagegrabwindow() with a COM object: $browser = new COM("InternetExplorer.Application"); $handle = $browser->HWND; $browser->Visible = true; $browser->Navigate($pre.$URL); while ($browser->Busy) { com_message_pump(4000); } $img = imagegrabwindow($handle); What I'm wondering is if there is any way to do the same thing with Firefox or Chrome? Can I invoke either of them with PHP COM?

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• .NET web service call slower when performed asynchronously

  - by joelt

  I have an ASP.NET site, and some pages need to call a web service. I used Visual Studio's "Add Web Reference" to auto-generate classes and methods for the web service. When I call the service synchronously, i.e. objService.MethodName("param1"), a call might take a second or so. When I call it asynchronously, i.e., objService.BeginMethodName("param1", AddressOf MyCallback, Nothing), it typically takes about 6 seconds. When debugging, it appears that the bulk of the time is spent waiting between the completion of the BeginMethodName call and the beginning of MyCallback. Does the thread switching really incur that much overhead? Is there another reason for this?

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• Insert into select and update in single query

  - by Ossi

  I have 4 tables: tempTBL, linksTBL and categoryTBL, extra on my tempTBL I have: ID, name, url, cat, isinserted columns on my linksTBL I have: ID, name, alias columns on my categoryTBL I have: cl_id, link_id,cat_id on my extraTBL I have: id, link_id, value How do I do a single query to select from tempTBL all items where isinsrted = 0 then insert them to linksTBL and for each record inserted, pickup ID (which is primary) and then insert that ID to categoryTBL with cat_id = 88. after that insert extraTBL ID for link_id and url for value. I know this is so confusing, put I'll post this anyhow... This is what I have so far: INSERT IGNORE INTO linksTBL (link_id,link_name,alias) VALUES(NULL,'tex2','hello'); # generate ID by inserting NULL INSERT INTO categoryTBL (link_id,cat_id) VALUES(LAST_INSERT_ID(),'88'); # use ID in second table I would like to add here somewhere that it only selects items where isinserted = 0 and iserts those records, and onse inserted, will change isinserted to 1, so when next time it runs, it will not add them again.

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• C++ code visualization

  - by bobobobo

  A sort of follow up/related question to this. I'm trying to get a grip on a large code base that has hundreds and hundreds of classes and a large inheritance hierarchy. I want to be able to see the "main veins" of the inheritance hierarchy at a glance - not all the "peripheral" classes that only do some very specific / specialized thing. Visual Studio's "View Class Diagram" makes something that looks like a train and its sprawled horizontally across the screen and isn't very organized. You can't grok it easily. I've just tried doxygen and graphviz but the results are .. somewhat similar to Visual Studio. I'm getting sweet looking call graphs but again too much detail for what I'm trying to get. I need a quick way to generate the inheritance hierarchy, in some kind of collapsible view.

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• MPI_Bsend and MPI_Isend. How do they work ?

  - by GBBL

  Hi, using buffered send and non blocking send I was wondering how and if they implement a new level of parallelism in my application eventually generating a thread. Imagine that a slave process generates a large amount of data and want to send it to the master. My idea was to start a buffered or non blocking send then immediately begin to compute the next result. Just when I would have to send the new data I wold check if I can reuse the buffer. This would introduce a new level of parallelism in my application between CPU and communication. Does anybody knows how this is done in MPI ? Does MPI generate a new thread to handle the Bsend or Isend ? Thanks.

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• Python configuration file generator

  - by Stan

  I want to use Python to make a configuration file generator. My roughly idea is feeding input with template files and some XML files with the real settings. Then use the program to generate the real configuration files. I got several questions: Is there any open source configuration generator program? (what could be the keyword), I wonder if there's anything can be added/modified in the design. Does Python have good XML parser module? Is it good idea to use XML file to save the original settings? I've been thinking to use Excel since it's more intuitive to maintain, but harder for program to parse. Not sure how people deal with this. Hope the community can give me some suggestions. Thanks a lot!

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• How to create a shape acting like a textbox?

  - by subho100

  Please refer this control http://www.charlespetzold.com/blog/2009/10/Using-Text-Outlines-in-Silverlight.html The formattedtext control is a shape which helps to generate the shape of the text with proper geometry. I would like to make this control act like a text box with cursors and features like typing in from keyboard. Right now I use an invisible text box with a formattedtext control to act like that. But the cursor position always creates a problem when the size of the text is not equal to the size of the rendered text as shape. Can anyone please show the way to achieve this.

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• How to update JLabel in Swing?

  - by Roman

  I am trying to use Swing Timer and I wanted to start from a very simple program. I have a window with text: "You have n seconds", where n changes from 10 to 0 every second. I know how to generate a window with text. And I understand how Timer works (it starts an action periodically). But I cannot figure out how to combing this two things. Should I use that: JLabel label = new JLabel(myMessage); and then with timer I need to update the "myMessage" variable? But I think I need to "force" my window to "update" itself (to display a new value stored in "myMessage").

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• Silverlight "Out of browser application" vs. "Install from page"

  - by Matt McMinn

  I’ve been working on integrating some controls which call in to COM classes in to a Silverlight client. Since my controls use COM, they only work out of browser. The client does have out of browser installation options turned on, and when I launch the client from visual studio, I can right click it, and install it to the desktop. That all seems to be working fine. The strange part though is that my controls don’t work when they’re out of browser – I get an error that the COM server can’t be started. The stranger part is that if I go in to the clientproperties, and set the Start Action from “Dynamically generate a test page” to “Out of browser application”, my controls work fine, and I get no COM errors. So I guess I don’t understand the difference between installing the application to the desktop through the right click menu and setting the application to start as an out of browser application. Any idea what's going on here?

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• How can I create a sample SQLLite DB for my iPhone app?

  - by Dr Dork

  I'm diving in to iPhone development and I'm building an iPhone app that uses the Core Data framework and my first task will be to get the model setup with a few that will display it. Thus far, I have the model defined and my Managed Object Files created, but I don't have a database with any sample data. What's a quick way to create a DB that conforms to my schema? Are there any tools that can generate a sample DB using my schemas? Is there a good tool I can use to directly manipulate the data in DB for testing purposes? Thanks in advance for your help! I'm going to continue researching this question right now.

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• How to prevent negative number in Mysql

  - by Jerry

  Hello guys.. I have data which is starting from 0 in my database. My php will add 1 or -1 to the data depending on the user's input. My problem is that if data is 0 and a user try to subtract 1. The data become 4294967295 which is the maximum value of INT data type. Are there anyways to make the data stays in 0 even when the user asks for -1? Thanks for the reply.. my sql command is like below update board set score=score-1 where team='TeamA' //this would generate 4294967295 if the score is 0.....

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• For securing forms, when do I issue the token?

  - by AQuestionADayKeepsTheDrAway

  So, I have a form, to make it a little more secure and potentially help prevent CSRF attacks I want to add a random token value in a hidden field that value is also stored server side in my session data. When should I issue a new token? Per form? Per page load where there is any form? Per session? I can render it invalid as soon as a form is successfully submitted but I'm wondering when to generate one. I ask as if I issue it per form or per page do I not risk the chance of a duplicate token value overwriting the existing (valid) token if a user opens a separate window but submitting the first form (with the now overwritten value)?

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• Most efficient method of generating PNG as HTTP response

  - by awj

  I've built an ASP.NET page whose output stream is a dynamically-generated PNG image containing only text on a transparent background. The text is based upon database IDs contained in the querystring. There will be a limited number of variations. Which one of the following would be the most efficient means of returning the image to the client? Store each variation upon the first generation, and thenceforth retrieve this from the drive. Simply generate the image each time. Cache the output response based upon the querystring.

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• Doesn't Matlab optimize the following?

  - by kloop

  I have a very long vector 1xr v, and a very long vector w 1xs, and a matrix A rxs, which is sparse (but very big in dimensions). I was expecting the following to be optimized by Matlab so I won't run into trouble with memory: A./(v'*w) but it seems like Matlab is actually trying to generate the full v'*w matrix, because I am running into Out of memory issue. Is there a way to overcome this? Note that there is no need to calculate all v'*w because many values of A are 0. EDIT: If that were possible, one way to do it would be to do A(find(A)) ./ (v'*w)(find(A)); but you can't select a subset of a matrix (v'*w in this case) without first calculating it and putting it in a variable.

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• On demand population of dropdown menu Java/Swing?

  - by Cookie Monster

  When I code a popup menu, I can check the mouse event and then before calling show() prepare the menu. Now I want a similar functionality for drop down menus, that live in the menu bar. For example I have the following menu bar layout: Menu 1 MenuItem 1.1 MenuItem 1.1.1 MenuItem 1.1.2 .. MenuItem 1.1.n Menu 2 Basically I want to generate the list MenuItem 1.1.1, MenuItem 1.1.2, ..., MenuItem 1.1.n dynamically when the drop down menu is invoked and before it is shown. How could I do this in Java/Swing? Best Regards

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• Running sql scripts against an attached database?

  - by Will

  I've got an MDF attached to an instance of Sql Server 2008 Express, and I need to run some sql scripts against it to generate tables, indexes, etc. But I can't figure out how to get this to work. If I load the scripts in Visual Studio, it only allows me to connect to the server and run it against a database. I can't choose a different provider (Microsoft Sql Server Database File), so I can't select my MDF. This leaves me the only option of running the script as individual queries, but that won't work as it appears it doesn't support TSQL CREATE statements. How can I run my sql script against an attached database?

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• unit testing methods with arrays as argument

  - by Ryan

  I am porting over some C++ assembly to VB that performs demodulation of various waveforms. I decided to go the unit test route instead of building a test app to get a feel for how testing is performed. The original demodulation code accepts an array that is the waveform along with some other arguments. How should one go about performing a test on something that has an array as an argument? Is it acceptable to generate fake data in a file and read it in at the beginning of the test? On a side note - The original C++ code was written because we were performing math that we couldn't do in VB6 so we had to cross boundaries between C++ and VB6 and arrays were used. Is there a "better" way of handling large amounts of data in the .NET world that us VB6 programmers may not yet be privy to? Or if we aren't crossing that managed/un-managed boundary, should we be representing our data as objects instead? Thanks all!

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• simple GET validation

  - by Andrew

  I have GET[] input and would like to carry out their validation. The input data is always a number by. Schema. I want to make sure that the pass number and the appropriate amount - not to throw the sql query. at this moment I am using the procedures $cc = $_GET['cc']; if ($cc=='') $cc='9012';$find=array("..", "/", "\\"); $replace=array("", "", ""); $cc=str_replace($find, $replace, $cc); $eic = $_GET['eic']; .... ect. // where f.ex. 9012 is an real existing data (in dbase) to generate sucure sql question GET[] variable data schema $_GET[$cc] - always 4 digits $_GET[$eic] - always 4 digits $_GET[$iy] - always 4 digits $_GET[$ir] - always 1 digit Can you show me a better way to secure my GET?

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• VS 2010 SQL Update for SQL Statement

  - by Mike Tucker

  Please bear with me as I'm just beginning to learn this stuff. I have a VS 2010 Web project up and I'm trying to understand how I can make a custom UpdateCommand (Because I chose to write my own SQL statement, I do not have the option for VS 2010 to auto generate an update command for me.) Problem is: I don't know what the UpdateCommand should look like. Here is my Select: SELECT * FROM Dbo.MainAsset, dbo.Model, dbo.Hardware WHERE MainAsset.device = Hardware.DeviceID AND MainAsset.model = Model.DeviceID Which, VS 2010 turns into: SELECT MainAsset.pk, MainAsset.img, MainAsset.device, MainAsset.model, MainAsset.os, MainAsset.asset, MainAsset.serial, MainAsset.inyear, MainAsset.expyear, MainAsset.site, MainAsset.room, MainAsset.teacher, MainAsset.FirstName, MainAsset.LastName, MainAsset.Notes, MainAsset.Dept, MainAsset.AccountingCode, Model.Model AS Hardware, Model.pk AS Model, Model.DeviceID, Hardware.Computer, Hardware.pk AS Expr3, Hardware.DeviceID AS Expr4 FROM MainAsset INNER JOIN Hardware ON MainAsset.device = Hardware.DeviceID INNER JOIN Model ON MainAsset.model = Model.DeviceID How would I approach updating one column, say "MainAsset.site" if that's changed in the Gridview DDL? Any help constructive help would be appreciated. Thank you.

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• Design ideas for

  - by ZeroVector

  I need to design and I'm looking in to using WCF to accomplish this. Basically here is how I have it: Server process: Generate list of files to transfer across multiple FTP/SFTP sites in to a queue. Client(s): Talk to server to get files to transfer. Transfer the files acquired. All the data necessary to transfer the files will be present. Once transferred successfully, notify the server to remove it from the queue. Also, make sure no other client is trying to perform the transfer. Are there are any good articles/design patterns to use? I think it sounds like a good candidate for WCF since ideally it would be load balanced against a few machines. Development will be in C#/.NET 3.5.

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• [WM 6.5 / C#] Send SMS AND copy them into the "sent messages" folder

  - by netblognet

  Hello, I'm developing an application for windows mobile 6.5. Im writing the code in c#.net and want to send sms due to my app. I checked out the POOM and sms sending worked fine. Code: SmsMessage msg = new SmsMessage(); msg.To.Add(receiver); msg.Body = messageText; msg.Send(); But there's one problem. I want that the messages will be saved/copied to the "send messages" folder, after my program has sent them. How can I realize that. Is it possible with the POOM, oder should I work with MAPI and generate a converted copy of the msg-Object in the "send messages"-folder? greets, raffi

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