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• The unmentioned parts of COBOL's history

  - by be nice to me.

  I'm very curious about old programming languages, especially COBOL, and as Wikipedia couldn't really tell me much about this topic, I decided to ask it here: Was COBOL the first programming language really being used in financial, stock and banking systems? Where exactly was COBOL used? Was it used more frequently than Fortran or BASIC, for example? I don't know if you lived at that time, but how did people react to the rising COBOL? Did they expect it to be the future? When has COBOL actually stopped being used to create new, big systems? Are you sure that there are still important legacy apps written in COBOL out there? I can't believe that somehow.

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• Critiquing my first Python script

  - by tipu

  A little bit of background: I'm building an inverted index for a search engine. I was originally using PHP, but because of the amount of times I needed to write to disk, I wanted to make a threaded indexer. There's a problem with that because PHP is not thread safe. I then tried Java, but I ended up with at least 20 try catch blocks because of the JSON data structure I was using and working with files. The code was just too big and ugly. Then I figured I should pick up some Python because it's flexible like PHP but also thread safe. Though I'm open to all criticism, what I'd like to learn is the shortcuts that the Python language/library provides that I skipped over. This is a PHP-afide Python script because all I really did was translate the PHP script line by line to what I thought was it's Python equivalent. Thanks. http://pastebin.com/xrg7rf9w

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• Controller getting NULL value?

  - by RSolberg

  I'm trying to make a call to a controller via jQuery $.post, but the parameter for my controller method keeps getting a NULL value despite it appearing to be setup similar to other controller methods. CONTROLLER [AcceptVerbs(HttpVerbs.Post)] public ActionResult SearchWeatherLocations(string searchFor) { //Do Some Magic } GLOBAL.ASAX routes.MapRoute("SearchWeatherLocations", "Home/SearchWeatherLocations/{searchFor}", new { controller = "Home", action = "SearchWeatherLocations" }); jQuery Call From View <script type="text/javascript" language="javascript"> $(document).ready(function () { GetWeatherLocations("seat"); }); function GetWeatherLocations(sSearchFor) { var divToBeWorkedOn = '#locations'; var webMethod = '<%= Url.Action("SearchWeatherLocations", "Home") %>/'; var url = webMethod + sSearchFor; $.post(url, function (data) { $('#locations').children().remove(); for (var count in data) { $('#locations').append("<li>" + data[count].LocationName + "&nbsp;(" + data[count].LocationCode + ")</li>"); } }); } </script>

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• Computer Quiz Management Software

  - by Asad Jibran Ahmed

  My university is holding a quiz contest in 2 weeks, and I need some sort of software (desktop or web based) that can be used to manage the quiz. I need functionality like an admin panel for adding teams, creating matches between 2 teams, adding questions and answers. I then need the software to automatically display the questions, accept answers, and display and store results. Is there any software (open source/freeware) that I can use for this task. If a pre-built software is not available, which language+library+platform would you suggest I make the software in. It can be either web based or a desktop app. But I need it by 2 weeks. Any suggestions?

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• XSLT: Is there a way to "inherit" canned functionality?

  - by Ian Boyd

  i am once again having to cobble together a bit of XSLT into order to turn generated XML into (rather than simply generating HTML). i'm having huge deja-vu this time again. i'm once again having to solve again basic problems, e.g.: how to convert characters into valid html entity references how to preserve whitespace/carriage returns when converting to html how to convert to HTML as opposed to xhtml how to convert dates from xml format into presentable format how to tear apart strings with substring This is all stuff that i've solved many times before. But every time i come back to XSLT i have to start from scratch, re-inventing the wheel every time. If it were a programming language i would have a library of canned functions and procedures i can call. i would have subroutines to perform the commonly repeated tasks. i would inherit from a base class that already implements the ugly boilerplate stuff. Is there any way in XSLT to grow, expand and improve the ecosystem with canned code?

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• Quartz2d vector images vs OpenGL vector description?

  - by tbarbe

  How big of a difference is the description language of Quartz2d to OpenGL ES? It seems they are similar in description power... except that Quartz is mostly 2d and that OpenGL is out of the box 3d ( but can be made 2d focused ). Are the mappings from 2dQuartz to 2d OpenGL ES that different? Im sure there must be differences in some specific features that might be handled differently on one vs another... but to do a translator? Anyone have experience with both OpenGL and Quartz2d have some insights?

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• Is there a config option in PHP to prevent undefined constants from being interpreted as strings?

  - by mrbinky3000

  This is from the php manual: http://us.php.net/manual/en/language.constants.syntax.php If you use an undefined constant, PHP assumes that you mean the name of the constant itself, just as if you called it as a string (CONSTANT vs "CONSTANT"). An error of level E_NOTICE will be issued when this happens. I really don't like this behavior. If I have failed to define a required constant, I would rather the script fail so that I am forced define it. Is there any way to force PHP to crash the script if it tries to use an undefined constant? For example. Both of these scripts do the same thing. <?php define('DEBUG',1); if (DEBUG) echo('Yo!'); ?> and <?php if(DEBUG) echo('Yo!'); ?> I would rather the second script DIE and declare that it tried to use an undefined constant DEBUG.

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• Key logging in .NET

  - by Moshe

  Is it possible to write a key logger in Visual Basic.NET? Is this the right language to be using? So far, I've gotten a console app to read input and append to a file. 1)How can I make a .NET program "catch" all keyboard input? 2)How do I make a process not show up in Task Manager? This is not for a virus, but rather a parental control program for a specific clientele. No malicious intent here.

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• Calling C function from DTrace scripts

  - by dmeister

  DTrace is impressive, powerful tracing system originally from Solaris, but it is ported to FreeBSD and Mac OSX. DTrace uses a high-level language called D not unlike AWK or C. Here is an example: io:::start /pid == $1/ { printf("file %s offset %d size %d block %llu\n", args[2]->fi_pathname, args[2]->fi_offset, args[0]->b_bcount, args[0]->b_blkno); } Using the command line sudo dtrace -q -s <name>.d <pid> all IOs originated from that process are logged. My question is if and how it is possible to call custom C functions from a DTrace script to do advanced operations with that tracing data during the tracing itself.

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• Integration of Photoshop and MySQL

  - by NewToProgrammingWorld

  I’m working to integrate Photoshop (CS4, local) with MySQL (Linux, remote), such that: a) image file information, data and meta data can be exported from PS into MySQL where same can be manipulated both manually and calculated, and then b) the MySQL fields can be referenced in Photoshop scripting for further automated image file manipulation, and c) the MySQL fields can be referenced for other purposes such as dynamic propagation of files and associated file data to a website, for example. I’ve spent many hours running searches for these concepts on StackOverflow, Google, and Adobe Support. I’m coming up empty, which leads me to believe that it’s not natively possible, and that I’ll need some middle language like PHP. Does anyone know if it’s possible for Photoshop and MySQL to bi-directionally share data? If so, how? If that’s not possible, what solution(s) might you recommend, in terms of specific tools/technologies that I can research further. Thank you.

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• Target .Net Framework 4 in t4 templates

  - by HeavyWave

  We have a template that goes like this <#@ template language="C#v3.5" #> <#@ assembly name="System.dll" #> <#@ assembly name="System.Core.dll" #> <#@ assembly name="System.Data.Linq.dll" #> It compiles and runs on .Net 3.5, but after we have switched to .Net 4 the template has stopped working, so I've tried using answer from here, but I get errors like this Error 99 Compiling transformation: Metadata file 'System.Data.Linq.dll' could not be found How do I correctly modify the template to run on .Net Framework 4?

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• How to use ORDER BY, LOWER .. in SQL SERVER 2008 with non-unicode languages

  - by hgulyan

  Hi, The question is about Armenian. I'm using sql server 2005, collation SQL_Latin1_General_CP1_CI_AS, data mostly is in Armenian and we can't use unicode. I tested on ms sql 2008 with a windows collation for armenian language ( Cyrillic_General_100_ ), I have found here, ( http://msdn.microsoft.com/en-us/library/ms188046.aspx ) but it didn't help. I have a function, that orders hex values and lower function, which takes each char in string and covnerts it to it's lower form, but it's not acceptable solution, it works really slow, calling that functions on every column of a huge table. Is there any solution for this issue not using unicode and working with hex values manually?

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• Saving Types generated via Reflection.Emit as code file (.cs) instead of saving it in .dll files

  - by Manish Sinha

  Before start let me tell my experience: I am experienced with C#.NET, web services, XML part and few more. Reflection is something new to me, though I have read extensively on it and tried out some experimental code, but haven't made anything great using reflection I checked out many examples of how we can create Type at runtime and then which can be saved in an assembly (.dll) files. Of all the examples I have seen is about saving the created types in the .dll files instead of code file. Isn't there any way to create the code file out of reflection? I need to create code file since I want to distribute code instead of compiled assemblies. What I want to do is something like xsd.exe does, either spit out a .dll or the code file(in any language). Isn't there any way to create a code file, since most of the place I can find is AssemblyBuilder ab = System.AppDomain.CurrentDomain.DefineDynamicAssembly(an, AssemblyBuilderAccess.Save); and then lastly ab.Save("QuoteOfTheDay.dll");

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• Windows API GUI programming

  - by genesys

  Hi! I'm working on a Project with outdated, very old looking GUI (the used GUI framework is more than 10 years old) Since the used programming language is Eiffel, there are almost no good libraries for GUI development. Although Wrappers for C libraries exist, it's not that easy to wrap something like Qt with them. The current GUI framework uses the Windows API to create windows, widgets and so on. But as stated - it's very old. Now i would like to learn more about how to use the Windows API directly to create state of the art GUI's Can someone recommend any reading material? Thanks!

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• aspx page which isn't rendering.

  - by sunglim

  Hello. I Need to make a webpage. asp.net this webpage recieve parameter by using Request.Querystring and Redirect webpage. in this page, no need to render. what should I write code in .aspx file? does this aspx file need html tag? or only <%@ Page %> need to be coded? <%@ Page Language="C#" AutoEventWireup="true" CodeBehind="TargetMarketingRedirect.aspx.cs" Inherits="Arche.Buy.Event.TargetMarketingRedirect" %

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• How to optimize MATLAB loops?

  - by striglia

  I have been working lately on a number of iterative algorithms in MATLAB, and been getting hit hard by MATLAB's performance (or lack thereof) when it comes to loops. I'm aware of the benefit of vectorizing code when possible, but are there any tools for optimization when you need the loop for your algorithm? I am aware of the MEX-file option to write small subroutines in C/C++, although given my algorithms, this can be a very painful option given the data structures required. I mainly use MATLAB for the simplicity and speed of prototyping, so a syntactically complex, statically typed language is not ideal for my situation. Are there any other suggestions? Even other languages (python?) which have relatively painless matrix tools are an option.

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• Protect Plesk login page from search engine eyes

  - by Iman Samizadeh

  Hi Folks, I was wondering if would it be possible to protect the "https://www.DOMAIN.com:8443" URL from search engines listing perhaps using the htaccess to redirect the 8443 port from "DOMAIN" to elsewhere? This is the VZPP Plesk - Login Login to Plesk. Please enter your login information. Username. Password. Interface Language. User Default, ENGLISH (United States), GERMAN (Germany) ... https://www.DOMAIN.com:8443/ - Many Thanks.

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• Writing a Compiler for .net - IL or Bytecode?

  - by Michael Stum

  I'm currently diving into the inner workings of .net, which means IL. As an exercise, I want to build a brainf..k compiler for .net (yes, they already exist, but as said it's for learning purposes). For the moment I'm just writing some text files that contain .il and compile them with ilasm, which works. But I wonder if I could/should go one level deeper and write bytecode directly? My "concern" is the Windows PE Stuff when compiling an EXE - instead of ilasm I would need some sort of Bytecode linker that would take my MSIL/CIL bytecode and generate the PE Stuff for it? Or do compilers "only" compile their language to IL and execute ilasm? Is there a managed version of it that I can call/embed from my compiler?

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• php not showing all images

  - by jera

  I a writing a gallery app in php. The images are dynamically displayed through php. On each load of the page, not all images are showing. it does this randomly, on each load. I have not had this problem before, as I am new to php. My previous apps where all in perl, and I had no dynamic image display problems when using that language. check it here: http://dev.system-engine.com/dev/exec/pcli.php?R=%27/Paintings%27&cfg=%22fgal%22 all help appreciated. thank, Jer A

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• Code optimization on minutes pr hour calculation

  - by corger

  Hi All, The following code takes a timeframe in minutes since midnight and creates an array with minutes pr hour. But, it's slow. Any better suggestions out there? (no, changing language is not an option :-) ) Const clDeparture As Long = 123 Const clArrival As Long = 233 Dim lHour As Long Dim lMinute As Long Dim alHour(25) As Long For lMinute = 0 To 1440 If lMinute >= clDeparture And lMinute < clArrival Then alHour(Int(lMinute / 60)) = alHour(Int(lMinute / 60)) + 1 End If Next The array should now contain: (0,0) (1,0) (2,57) (3,53) (4,0) ..... Regards

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• WCF Service Library Reference in a Web Form (asp.net)

  - by Abu Hamzah

  i am not sure if this is the correct way of doing but i read that you not suppose to have a WCF Service Library reference in your web form project rather you add endpoints to your web.config, is that true? here is what i have done: 1) create a WCF service library project 2) create a simple service called "MyService.svc" WebForm: 1) Create a web project 2) create a WCF Service and in it i have this code <%@ ServiceHost Language="C#" Service="WCFJQuery.ContactBLL.Implementation.ContactUs" Factory="System.ServiceModel.Activation.WebScriptServiceHostFactory" %> 3) right click on the web proejct and "Add Reference" and add teh MyService.dll reference from WCF service library project. is this something how you suppose to do?

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• OS memory allocation addresses

  - by user1777914

  Quick curious question, memory allocation addresses are choosed by the language compiler or is it the OS which chooses the addresses for the memory asked? This is from a doubt about virtual memory, where it could be quickly explained as "let the process think he owns all the memory", but what happens on 64 bits architectures where only 48 bits are used for memory addresses if the process wants a higher address? Lets say you do a int a = malloc(sizeof(int)); and you have no memory left from the previous system call so you need to ask the OS for more memory, is the compiler the one who determines the memory address to allocate this variable, or does it just ask the OS for memory and it allocates it on the address returned by it?

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• Why are alloc and init called separately in Objective-C?

  - by André Hoffmann

  Note: I'm relatively new to Objective-C and am coming from Java and PHP. Could someone explain to me why I always have to first allocate and then initialize an instance? Couldn't this be done in the init methods like this: + (MyClass*)init { MyClass *instance = [MyClass alloc]; [instance setFoo:@"bla"]; return instance; } + (MyClass*)initWithString:(NSString*)text { MyClass *instance = [MyClass init]; [instance setFoo:text]; return instance; } ... Is this just a relict from the old C days or is there something that I'm not seeing? I know this isn't a problem as I could as well always call alloc and init, but since it's a bit tedious I'd like to at least know why I'm doing it. I'm liking the expressiveness of the language so far, but this is something that I want to fully understand in order to think the Objective-C way. Thank you!

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• Problem creating PostGIS template database

  - by omat

  I am trying to build a template geographic database for PostGIS (1.5) on Mac OS X Snow Leopard (10.6) for my GeoDjango application. I am following: http://docs.djangoproject.com/en/dev/ref/contrib/gis/install/#creating-a-spatial-database-template-for-postgis I've managed to come up to the point where the provided postgis.sql should be run (i.e. psql -d template_postgis -f $POSTGIS_SQL_PATH/postgis.sql) At that point I am getting an error at the first SQL statement that is tried to be run. When I try that on the psql prompt the result is as follows: template_postgis=# CREATE OR REPLACE FUNCTION st_spheroid_in(cstring) RETURNS spheroid AS '/usr/local/pgsql/lib/postgis-1.5','ellipsoid_in' LANGUAGE 'C' IMMUTABLE STRICT; NOTICE: type "spheroid" is not yet defined DETAIL: Creating a shell type definition. ERROR: could not load library "/usr/local/pgsql/lib/postgis-1.5.so": dlopen(/usr/local/pgsql/lib/postgis-1.5.so, 10): Symbol not found: _DatumGetFloat4 Referenced from: /usr/local/pgsql/lib/postgis-1.5.so Expected in: /opt/local/lib/postgresql83/bin/postgres in /usr/local/pgsql/lib/postgis1.5.so Any ideas what might have been messed up?

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• I have some questions about building an AIR app for use with a connected projector.

  - by knuckfubuck

  For an app I'm working on, I'd like to have a control panel window and a video output window to use for projecting video with an attached projector. I have built many Flash applications but this will be my first time using AIR so I have some questions. Is it possible to have two seperate windows as part of one AIR application? Can one of the windows (the video output) be in full-screen mode while the other window stays normal? How does AIR do with playing local video? Will there be crashes or choppy playback? Is there a better language option for what I'm trying to accomplish?

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