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• Is there a good reason Uni courses still use "academic" languages like modula2?

  - by Cheeso

  This question prompts me to ask - why do universities still teach in languages like Modula2, when improved modern languages are available for free? Are there uni's that still teach Pascal, for example? I mean, it was good 30 years ago, but... now? Why? Why not Java, C#, Haskell? Related: Is it backwards to still teach LISP? Is this a duplicate question? If not, I think it ought to be a community wiki topic.

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• How to programatically create a xaml panel with controls

  - by randy

  Hello, Is it possible to programatically create a new panel within a current document that contains duplicate elements? For example when the window loads I have a grid (one row) with three text fields, Fname01, Lname01, and DOB01, I would like to have a button that when clicked would append a new row to the grid with three new fields (Fname02, Lname02, and DOB02). Each time the button is clicked (addrow) a new row would be created. I am also interested to learn how these fields are identified within the xaml that would allow me to databind or programatically reference the created fields for insertion of the values into a database etc. Thank you in advance,

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• Where can I find boost::fusion articles, examples, guides, tutorials?

  - by Kyle

  I am going to go ahead and shamelessly duplicate this question because the accepted answer is essentially "nope, no guides" and it's been nearly a year now since it's been asked. Does anyone know of any useful articles, guides, tutorials, etc. for boost::fusion besides the barebones documentation on boost.org? (which I'm sure is great as a reference after one has learned the library.) I'm completely open to, say, a link to a book on Amazon. Searched for it myself just now but all I came up with was green tea. The top links on Google aren't much better.

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• SQL query: how to translate IN() into a JOIN?

  - by tangens

  I have a lot of SQL queries like this: SELECT o.Id, o.attrib1, o.attrib2 FROM table1 o WHERE o.Id IN ( SELECT DISTINCT Id FROM table1, table2, table3 WHERE ... ) These queries have to run on different database engines (MySql, Oracle, DB2, MS-Sql, Hypersonic), so I can only use common SQL syntax. Here I read, that with MySql the IN statement isn't optimized and it's really slow, so I want to switch this into a JOIN. I tried: SELECT o.Id, o.attrib1, o.attrib2 FROM table1 o, table2, table3 WHERE ... But this does not take into account the DISTINCT keyword. Question: How do I get rid of the duplicate rows using the JOIN approach?

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• How to write web services in java

  - by gurupriyan.e

  Though this might appear as a duplicate of Java Web Services , I would like to know Where to start and to continue.In the past, I have invested so much of time to find where to start but I wasn't able to. There are so many jargons and chaos (at least for me!) while reading the pages about web services. There are so many terms - like JAX-RPC, JAX-WS, Axis, Rest, Servlet as WebService, EJB's as Web Service and other terms that I don't know. Can this User group consolidate and give a highlevel overview of Java Web Services which is easy to understand and follow? I appreciate your kindness and thanks for your help.

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• Should HTTP POST be discouraged?

  - by Tomas Sedovic

  Quoting from the CouchDB documentation: It is recommended that you avoid POST when possible, because proxies and other network intermediaries will occasionally resend POST requests, which can result in duplicate document creation. To my understanding, this should not be happening on the protocol level (a confused user armed with a doubleclick is a completely different story). What is the best course of action, then? Should we really try to avoid POST requests and replace them by PUT? I don't like that as they convey a different meaning. Should we anticipate this and protect the requests by unique IDs where we want to avoid accidental duplication? I don't like that either: it complicates the code and prevents situations where multiple identical posts may be desired.

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• Controller with same name as an area - Asp.Net MVC4

  - by Trober

  I have a Contacts controller in the main/top area, and I have an area named "Contacts". I get POST 404s to the Contacts controller if I register my areas before I register my top-level routes: protected void Application_Start() { AreaRegistration.RegisterAllAreas(); ModelBinders.Binders.DefaultBinder = new NullStringBinder(); RouteConfig.RegisterRoutes(RouteTable.Routes); } And, if I register my areas after my routes, my 404s to the Contacts controller goes away, but my routes to the Contacts area are now 404s. ...lots of duplicate controller name questions logged, but I haven't found a specific scenario where the area is the same name as the controller. ...probably an easy fix. Would appreciate help. :-D

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• vba excel copy subtable from sheet to sheet

  - by user429400

  I realize that this is probably a duplicate, but I've been searching for an hour and I can't to get the syntax right. I have a sheet with several tables. There is at least one empty column and one empty row between one table to the other. I know the start row and start column of each table, and I know that each table has 3 columns. I don't know how many rows it has. I want to write a sub that receives: table start row table start column and copies the table into another sheet (let's say that the destination is sheet2 starting at A1). I know I can do it with a loop, but I suspect there is a better syntax right? (The main issue here is that I need to find the number of rows each table has) Thanks. Li

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• What is the Perl equivalent to C's #include? [closed]

  - by Herms

  Possible Duplicate: How do I include functions from another file in my Perl script? I have a couple simple perl scripts that share some subroutines. I'd like to pull those subroutines out into another file, but I'm not sure how to go about doing that. All I need is an equivalent to C's #include. I found a couple things online about creating modules, but that seems like overkill for what I'm doing. Is there a way to just tell perl to load/execute another perl script inline, so it's treated as if it's just part of the file (like #include in C)?

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• SVN - When you tag a working copy is it still a cheap copy?

  - by mcdon

  Using Subversion, in my working copy I make a minor modification (update a version number). I would then like to tag my working copy. Would this tag still be a cheap copy with the modification, or would SVN duplicate the files? I would hate to see my repository grow enormously in size because I'm trying to save a version number change. The reason I ask about creating a tag that contains a modification rather than committing then tagging involves my build server. The build server creates a CCNetLabel which I use to update the version numbers of my projects (AssemblyInfo.cs). When the build is successful it creates a tag. When I use ForceBuild the tag is based on the working copy which would contain the modified version number. I want the tag to contain the appropriate version number. note: It's debatable if I'm creating a branch or a tag, however SVN does not make a distinction between the two.

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• Are there hosted jQuery UI themes anywhere? [closed]

  - by Kip

  Possible Duplicate: Downloading jQuery CSS from Google's CDN I'm using Google-hosted jQuery and jQueryUI, but I'm wondering if there are hosted jQueryUI themes anywhere? I'd like to just point to a hosted CSS file (the same way I do with the hosted JS file), so that I don't have to worry about setting up directories for the widget images or the CSS files or anything like that. Update I've found this, referenced by the jqueryui.com source code: <link rel="stylesheet" href="http://ajax.googleapis.com/ajax/libs/jqueryui/1.7.2/themes/ui-lightness/jquery-ui.css" type="text/css" media="all" /> Substituting the name of other themes from the themeroller page seems to work, but I'd love it if someone could find where on Google they list all the available themes that they are hosting. I'm not finding anything about this (maybe it is very recent?).

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• Hide partial background repeat

  - by ComFreek

  Consider these simple CSS rules: jsFiddle div#container { width: 50%; height: 260px; background-image: url('Image.png'); background-repeat: repeat-x; }? The problem is that I only want full images. If there is not enough space for another duplicate, it should NOT be shown. I've never heard that CSS provides a rule for it. So how can I achieve it in JavaScript (jQuery already included)?

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• Is there a version of postActionEvent for KeyEvent (specifically for a JTextArea)?

  - by Brian Pelc

  I'm writing a program that contains multiple JTextFields and 2 JTextAreas within an input panel. I have a submit button on the bottom. I have it set up so when a user types something into each field (including the JTextAreas) and hits the Enter key, it updates a text file, and when they press the submit button it updates the file then outputs a new version of it in the local directory. If the user presses Enter in any of the fields, it validates their input, however, I want to re-validate all fields when they press the submit button. Each field (again, JTextAreas included) has it's own validation check within its ActionListener or KeyListener (for the JTextAreas). It's easy enough to use postActionEvent() for the JTextFields, but is there a similar method for the JTextAreas to force fire a KeyEvent? I don't want to duplicate code and consume memory by re-writing the validation for those 2 Components inside the ActionEvent for the JButton. Unfortunately, I can't provide a sample because I'm writing the program on a classified machine (PC).

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• Can I pass events like key strokes to another control in Silverlight?

  - by herzmeister der welten

  Can I pass events like key strokes to another control in Silverlight? Imagine I'm in a custom control that contains a Textbox and a Treeview. I'm listening to a Key event for the TextBox. When the user pushes the Arrow Up or Arrow Down key, I want the Treeview to behave as if it's itself who received that event, i.e. it should move the current selection up or down. The user shouldn't lose focus on the TextBox though so that they can continue typing. Is this possible? I don't want to set the selection manually on the Treeview because it has no easy MoveSelectionUp() or MoveSelectionDown() method, so I would have to duplicate that functionality which is not so trivial especially when the tree is databound and loads nodes on demand.

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• Send mail from a Windows script

  - by Jörgen Lundberg

  I would like to send mail from a script on a Windows Server 2003 Standard Edition. I think the server setup is pretty much out of the box. The mail server is an Exchange one, and when you're on the internal network you can use plain old SMTP. I have done it from my machine with Perl, but unfortunately Perl is not available on the server. Is there an easy way of doing this from a .bat-file or any other way that doesn't require installing some additional software? Edit: Thanks for the quick replies. The "blat" thingie would probably work fine but with wscript I don't have to use a separate binary. I didn't see PhiLho's post the first time I edited and selected an answer. No need for me to duplicate the code here. Just save the script to a file, say sendmail.vbs, and then call it from the command prompt like so: wscript sendmail.vbs

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• Removing Redundant Data from a List<T>

  - by Mark

  I have a List of objects which are ordered. I would like to remove redundant objects where redundant does not necessarily mean duplicate. Here is an example: List<Point> points = new List<Point> { new Point(0, 10), new Point(1, 12), new Point(2, 16), new Point(3, 16), new Point(4, 16), new Point(5, 13), new Point(6, 16), }; I am interested in removing the new Point(3, 16) entry because it doesn't provide useful information; I already know that the element at 2=16 and the element at 4=16. The information that 3=16 doesn't do me any good in my application (because I already have the bounds {2,4}=16), so I would like to remove that entry. I'd also like to not that I want to keep the 5th and 6th entry because there are not consecutive entries where Y=16. Is there a slick way to do this with linq?

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• mod_rewrite: remove trailing slash (only one!)

  - by tshabalala

  Hello. I use mod_rewrite/.htaccess for pretty URLs. I'm using this condition/rule to eliminate trailing slashes (or rather: rewrite to the non-trailing-slash-URL, by a 301 redirect; I'm doing this to avoid duplicate content and because I like URLs with no trailing slashes better): RewriteCond %{REQUEST_FILENAME} !-f RewriteCond %{REQUEST_FILENAME} !-d RewriteCond %{HTTP_HOST} !^\.localhost$ [NC] RewriteRule ^(.+)/$ http://%{HTTP_HOST}/$1 [R=301,L] Working well so far. Only drawback: it also forwards "multiple-trailing-slash"-URLs to non-trailing-slash-URLs. Example: http://example.tld/foo/bar////// forwards to http://example.tld/foo/bar while I only want http://example.tld/foo/bar/ to forward to http://example.tld/foo/bar. So, is it possible to only eliminate trailing slashes if it's actually just one trailing slash? Sorry if this is a somewhat annoying or weird question! Thanks.

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• C++ - Resources in static library question

  - by HardCoder1986

  Hello! This isn't a duplicate of http://stackoverflow.com/questions/531502/vc-resources-in-a-static-library because it didn't help :) I have a static library with TWO .rc files in it's project. When I build my project using the Debug configuration, I retrieve the following error (MSVS2008): fatal error LNK1241: resource file res_yyy.res already specified Note, that this happens only in Debug and Release library builds without any troubles. The command line for Resources page in project configuration looks the same for every build: /fo"...(Path here)/Debug/project_name.res" /fo"...(Path here)/Release/project_name.res" and I can't understand what's the trouble. Any ideas? UPDATE I don't know why this happens, but when I turn "Use Link-Time Code Generation" option on the problem goes away. Could somebody explain why does this happen? I feel like MS-compiler is doing something really strange here. Thanks.

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• Is it possible to make a PHP script run itself every hour or so without the use of a cronjob?

  - by Rob

  I'm pretty sure I've seen this done in a php script once, although I cant find the script. It was some script that would automatically check for updates to that script, and then replace itself if there was an update. I don't actually need all that, I just want to be able to make my PHP script automatically run every 30 minutes to an hour, but I'd like to do it without cronjobs, if its possible. Any suggestions? Or is it even possible? EDIT: After reading through a possible duplicate that RC linked to, I'd like to clarify. I'd like to do this completely without using resources outside of the PHP script. AKA no outside cronjobs that send a GET request. I'd also like to do it without keeping the script running constantly and sleeping for 30 minutes

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• Use branching in TFS for 32 bit and 64 bit version of a software?

  - by Malkier

  Hi everyone, we are in the process of porting a 32bit application, which uses the Outlook Redemption DLL to a 64 bit version, since redemption has recently been released as a 64 bit version as well. We'd like to maintain two versions of the application, one for 32 and one for 64 bit. What is the best way to organize these projects under team foundation server source control? Would I create a branch of the existing 32 bit version? Copying the whole project seems sub-optimal since it would duplicate all the business logic code. Any suggestions?

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• ASP.NET MVC - How to Preserve ModelState Errors Across RedirectToAction?

  - by RPM1984

  Hi Guys, I have the following two action methods (simplified for question): [HttpGet] public ActionResult Create(string uniqueUri) { // get some stuff based on uniqueuri, set in ViewData. return View(); } [HttpPost] public ActionResult Create(Review review) { // validate review if (validatedOk) { return RedirectToAction("Details", new { postId = review.PostId}); } else { ModelState.AddModelError("ReviewErrors", "some error occured"); return RedirectToAction("Create", new { uniqueUri = Request.RequestContext.RouteData.Values["uniqueUri"]}); } } So, if the validation passes, i redirect to another page (confirmation). If an error occurs, i need to display the same page with the error. If i do return View(), the error is displayed, but if i do return RedirectToAction (as above), it loses the Model errors. I'm not surprised by the issue, just wondering how you guys handle this? I could of course just return the same View instead of the redirect, but i have logic in the "Create" method which populates the view data, which i'd have to duplicate. Any suggestions?

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• functions in F# .. why is it not compiling

  - by Tanmoy

  Hi, I have written two versions of code. The first one works as expected and print "Hi". the second one gives me error that "block following this let is unfinished" 1st version #light let samplefn() = let z = 2 let z = z * 2 printfn "hi" samplefn() 2nd version #light let samplefn() = let z = 2 let z = z * 2 samplefn() Only difference is the printfn is absent in the second version. I am using Visual Studio 2010 as my IDE. I am very new to F# but this error seems very strange to me. I guess I am missing some very important concept. Please explain. Edit: Also if I do it outside the function I get error even with the first version of code. #light let z = 2 let z = z * 2 printfn "Error: Duplicate definition of value z"

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• Having difficulty catching postgresql exception in sequel/ruby

  - by mhd

  I have postgresql table that has somekind of unique constraint. I have ruby script that will update this table. The ruby script should be able to switch to UPDATE instead of INSERT when this kind of error occured: PGError: ERROR: duplicate key value violates unique constraint CMIIW, sequel seems cannot catch this exception?? Anyway,sample code below is something that I would like to see to work but apparently not: @myarray.each do |x| fresh_ds = DB["INSERT INTO mytable (id, col_foo) values ('#{x}' ,'#{myhash[x]}')"] result = fresh_ds.insert catch Sequel::Error do fresh_ds = DB["UPDATE mytable set col_foo = '#{myhash[x]} where id = #{x}"] result = fresh_ds.update end end Maybe my ruby code is wrong or I missed something I don't know. Any solution? Thanks. UPDATE: code below works, the error is caught when unique constraint is violated. @myarray.each do |x| begin # INSERT CODE rescue Sequel::Error # UPDATE CODE end end

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• Programming cookbook? [closed]

  - by user73669

  Possible Duplicate: What is the single most influential book every programmer should read? Hello With sites like The Daily WTF and recurring threads on Slashdot and elsewhere about bad programming, I figured that, to avoid people reinventing the wheel (badly or not), there should be a good, fat book on programming that would go through typical programming problems and show good, known algorithms, either in pseudo-code or some language with an easy syntax so that the language is not an issue. Here's the list of books on the subject I saw at my local computer bookstore. Can you recommend a couple, or add to this list if it's missing better options? The art of computer programming Code complete Masterminds of programming 97 things every programmer should know The passionate programmer Pragmatic thinking & learning Coders at work The algorithm design manual Algorithms and programming How to think about algorithms How to think like a programmer Why programs fail Beautiful data Beautiful code The productive programmer Solid code Write great code Clean code Programming language pragmatics Hello world Learning Processing Learn to program Thank you.

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• How does windows differentiate between regular exe and a .Net exe?

  - by Yogendra

  Hi All, This might be a duplicate entry. Excuse me if it is. I was asked in an interview as to how does Windows OS differentiate between regular exe and .Net exe. My reply was, when .Net exe is build, the compiler emits some information into the header. The information is PE32 or PE32+. windows verifies the header to determine if it needs to load the MSCOREE.dll which loads the CLR and executes the exe. I am not sure if my answer is correct ? Your inputs is appreciated.

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