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  • Best way to reverse a string in C# 2.0

    - by Guy
    I've just had to write a string reverse function in C# 2.0 (i.e. LINQ not available) and came up with this: public string Reverse(string text) { char[] cArray = text.ToCharArray(); string reverse = String.Empty; for (int i = cArray.Length - 1; i > -1; i--) { reverse += cArray[i]; } return reverse; } Personally I'm not crazy about the function and am convinced that there's a better way to do it. Is there?

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  • Return the difference between the lowest and highest key

    - by stan
    This is a past exam paper i am attempting and have no way to check if the out put is correct as i am not capable of building one of these things the question is in the title class Tree{ Tree left; Tree right; int key; public static int span(Tree tree) { if ( tree == null ){ return null; } if( tree.left != null) int min = span(tree.left); } if( tree.right != null){ int max = span(tree.right); } return max - min; } } Could anyone suggest what i need to change to get 5/5 marks :D - the only thing we have to do is write the span method, the header was given for us Thanks

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  • How to correctly migrate urls from custom asp.net solution to Wordpress?

    - by Marek
    I have a web site built using asp.net with ugly URLs like /DisplayContent.aspx?id=789564. I know how to migrate the database, but the Wordpress urls will be (naturally) different. Can I simply write some mapping or do I have to include a rewrite rule for each subpage (300 pages) in .htaccess? Should I provide a rewrite rule for each existing page that would transform a full old url to the known new url, like for example: /DisplayContent.aspx?id=789798 -> /2010-5-10/Title-Of-The-Post Even if I manage to migrate the URLs, the structure of the HTML for the new content will naturally be different. How does this affect SEO? Should I run asp.net and wordpress side by side and issue the redirects from the asp.net application? What is the most efficient solution to this kind of migration of URLs without doing PHP programming?

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  • What is your most obfuscated JavaScript example (5 lines maximum)?

    - by snowlord
    JavaScript is known as a language with many weird features. This probably makes it a good language to write extremely obfuscated and hard to understand code in (in the style of The International Obfuscated C Code Contest). What would be your best example of obfuscated JavaScript code (5 lines maximum)? I am thinking that it should be very hard to understand, but also have an element of style or humor in it. And for clarity: using obfuscation tools is not the point, of course. Hand crafting only!

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  • UI Design - design pattern for city/country drop down? (ASP.NET MVC)

    - by JK
    What is the best way to do a city/country dropdown pair in ASP.NET MVC? I see lots of places with country above city, but that's unnatural: in real life we write city/country. I've used city, then country, but the problem is that the user then has to go backwards after changing the country. The other problem is what do you do about cities/countries not in your list? If city/country are both drop downs, then the user cant type their own city if it is missing. But if you have a dropdown and a textbox, that makes it unwieldy (you end up with 4 controls to enter 2 pieces of data). Are there any examples websites where the city/country dropdown pair are done in a very useable and clear manner?

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  • Regex: How to leave out webding font characters?

    - by DS
    Hi, I've a free text field on my form where the users can type in anything. Some users are pasting text into this field from Word documents with some weird characters that I don't want to go in my DB. (e.g. webding font characters) I'm trying to get a regular expression that would give me only the alphanum and the punctuation characters. But when I try the following, the output is still all the characters. How can I leave them out? <html><body><script type="text/javascript">var str="???????";document.write(str.replace(/[^a-zA-Z 0-9 [:punct]]+/g, " "));</script></body></html>

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  • Why do I have to give an identifier?

    - by Knowing me knowing you
    In code: try { System.out.print(fromClient.readLine()); } catch(IOException )//LINE 1 { System.err.println("Error while trying to read from Client"); } In code line marked as LINE 1 compiler forces me to give an identifier even though I'm not using it. Why this unnatural constrain? And then if I type an identifier I'm getting warning that identifier isn't used. It just doesn't make sense to me, forcing a programmer to do something unnecesarry and surplus. And after me someone will revise this code and will be wondering if I didn't use this variable on purpouse or I just forgot. So in order to avoid that I have to write additional comment explaining why I do not use variable which is unnecessary in my code. Thanks

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  • Permission error while trying to access an (server) program started by a Java program.

    - by Zardoz
    I am starting a server application (normally to be started from the Unix command line) by using Runtime.getRuntime().exec("path/mmserver"). My problem is now that as long as my Java program, which started that server runs, the server is correctly accessible (from command line and other programs). But when my Java program exits the sever is not accessible anymore (the process of the server is still running). I just get such a error message when trying to access the server: "Error: permission_error(flush_output(user_output),write,stream,user_output,errno(32))". The server is a blackbox for me. I am just looking for other ways to start a new process. And maybe someone has a hint why I get that permission error (even if one doesn't know what that server exactly is ... you rather won't know it).

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  • travesersing the dom with inexact parameters

    - by rashcroft23
    Hi, I want to grab the image src on a product page in a e commerce website. I'm writing this as a bookmarklet, so I'd like the code to work universally as possible. I've noticed that there are only two reoccurring factors in the product image tag among top e-commerce websites (amazon, bestbuy ect.): border=0 and 180<width&height<400. So how could I write a selector that would give me the srcof the first img element on the page with no border and width & height between 180 and 400 px? Or is there a better way of doing this? P.S. since I'm trying to keep the bookmarklet as light as possible, I don't want to use any libraries (jquery, yui etc)

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  • Is it bad practice to use Reflection in Unit testing?

    - by Sebi
    During the last years I always thought that in Java, Reflection is widely used during Unit testing. Since some of the variables/methods which have to be checked are private, it is somehow necessary to read the values of them. I always thought that the Reflection API is also used for this purpose. Last week i had to test some packages and therefore write some JUnit tests. As always i used Reflection to access private fields and methods. But my supervisor who checked the code wasn't really happy with that and told me that the Reflection API wasn't meant to use for such "hacking". Instead he suggested to modifiy the visibility in the production code. Is it really bad practice to use Reflection? I can't really believe that

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  • SQL Server 2008 - Get Latest Record from Joined Table

    - by user336786
    Hello, I have a SQL Server 2008 database. This database has two tables called Customer and Order. These tables are defined as follows: Customer -------- ID, First Name, Last Name Order ----- ID, CustomerID, Date, Description I am trying to write a query that returns all of the customers in my database. If the user has placed at least one order, I want to return the information associated with the most recent order placed. Currently, I have the following: SELECT * FROM Customer c LEFT OUTER JOIN Order o ON c.[ID]=o.[CustomerID] As you can imagine, this will return all of the orders associated with a customer. In reality though, I only want the most recent one. How do I do this in SQL? Thank you!

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  • C++ IDE for OSX

    - by gprime
    When i was at university i wrote a lot of C++. I primarily used either Visual Studio (at the time it was version 6) or VIM (if i was on linux) as an editor to write my code. Since i have graduate and have been working primarily in web programming i have stopped writing C++. Since i graduated i have also bought myself and started using my Mac exclusively. I am now starting to get back to my C++ coding (just for fun) and would like an opinion on good IDE's for Mac. I am currently using xCode which seems kinda cool because it has everything built into it. Do any of you have any other IDE's that you would suggest that i give a shot or should i just stick to xCode?

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  • mysql_connect() doesn't work when run by apache; works from command line.

    - by Skeeter
    Hi, I have a strange issue. I'm trying to write a simple php webpage on my server, but mysql_connect() doesn't connect to any server, either local or otherwise. Here's where it gets strange. If I take the same php script and run it from the commandline, the script works. phpinfo() indicates that both the file (being run by apache) and the commandline (run as root) are calling the same version of php, mysql is loaded, and the php.ini is the same. Furthermore, I'm running a MediaWiki installation on this same server, and it's using the mysqld installed locally and works just fine, so I'm completely at a loss as to why the code isn't working. The error I receive on runtime: Can't connect to MySQL server on 'xxx.xxx.xxx.xxx' (13) (The IP is x'd out for the privacy of the owner of the server I'm connecting to)

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  • MySQL column names and aliases

    - by user329820
    hi, I have read that after select we use column-names but I have found a statement that was like this: SELECT 'A' FROM T WHERE A = NULL; would you lease help me? thanks (A is a column- name here?) my DBMS is MySQL EDITED : the exact question is this that: Will the above statement produce a row (select all that apply)? Notice that ANSI_NULLS is OFF. I want to know that the above statement will work? because some of you said that we should write IS NULL instead of =null

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  • Lightbox effect with Jquery

    - by Sarfraz
    Hello, I just wanted to know how to create lightbox effect with JQuery, I mean let's suppose I have div, and when i click some button it shows that div at the center of the browser window across all browsers with a transparent background behind. In this div i could show just about anything including a form, image, or some text so it becomes sort of stylish alert box. So how to: Center a div across all browsers and behind this div put a transparent background covering entire screen of browser. Note: I know there are a host such effects out there, i just want to know how do i create a simple centered div with transparent background behind. So please don't suggest any pre-made solution, would be great if you could write sample code for that. Thanks

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  • Emacs and Long Shell Commands

    - by darrint
    Is there a way to run a shell command, have the output show up in a new buffer and have that output show up incrementally? Eshell and other emacs terminal emulators do a find job of this but I see no way to script them. What I'd like to do is write little elisp functions to do stuff like run unit tests, etc. and watch the output trickle into a buffer. The elisp function shell-command is close to what I want but it shows all the output at once when the process finishes.

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  • Why do C# and Java require everything to be in a class?

    - by Javier Badia
    It seemed like this question should have been asked before, but searching found nothing. I've always wondered what's the point of making us put every bit of code inside a class or interface. I seem to remember that there were some advantages to requiring a main() function like C, but nothing for classes. Languages like Python are, in a way, even more object oriented than Java since they don't have primitives, but you can put code wherever you want. Is this some sort of "misinterpretation" of OOP? After all, you can write procedural code like you would in C and put it inside a class, but it won't be object oriented.

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  • c++ unicode writing is not working

    - by Jugal Kishore
    I am trying to write some Russian unicode text in file by wfstream. Following piece of code has been used for it. wfstream myfile; locale AvailLocale("Russian"); myfile.imbue(AvailLocale); myfile.open(L"d:\\example.txt",ios::out); if (myfile.is_open()) { myfile << L"?????? ????" <<endl; } myfile.flush(); myfile.close(); Something unrecognizable is written to the file by executing this code, I am using VS 2008.

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  • c++ classes & lua

    - by anon
    I want to have C++ objects that I can read/write in both C++ & Lua. I have looked at: http://www.lua.org/pil/28.html However, I do not like that solution, since my objects have constructors & destructors (and they are important as I use RAII and these take care of reference counts). What I don't like in the PIL solution is that the object is allocated in Lua's heap. What i want instead, is to create hte C++ object on my own, and just have lua have a way to do get/set on them. Does anyone have a good tutorial/link on this? Tanks!

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  • Policies Array Class-Design wrapper

    - by PT
    Hi, i want to write an wrapper for different Array Classes with different Policies. For example: typedef ArrayType<useValArray,StdAllocator> Array; // one global assignment I want to use the class like a blitz++ Array for example: Array<double,2> x(2,2); //maps the Array to an Valarray or to a Blitz++ Array Array<double,2> x2(5,6); is this Posible? Which technics i need to realise that?

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  • How should I mock out my data connectivity

    - by BobTheBuilder
    I'm trying to unit test my Data Access Layer and I'm in the process of trying to mock my data connectivity to unit test my DAL and I'm coming unstuck trying to mock out the creation of the commands. I thought about using a queue of IDbParameters for the creation of the parameters, but the unit tests then require that the parameters are configured in the right order. I'm using MOQ and having looked around for some documentation to walk me through this, I'm finding lots of recommendation not to do this, but to write a wrapper for the connection, but it's my contention that my DAL is supposed to be the wrapper for my database and I don't feel I should be writing wrappers... if I do, how do I unit test the connectivity to the database for my wrapper? By writing another wrapper? It seems like it's turtles all the way down. So does anyone have any recommendations or tutorials regarding this particular area of unit testing/mocking?

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  • How do i generate thumbnail image for use with img tag ? Java web application.

    - by Nitesh Panchal
    Hello, I am using the below given code, but it is not working properly. Can anybody tell me how do i generate thumbnail of the image? because i am creating a photo album and i want only thumbnail images to be downloaded at first, not the entire 400-500 kb images. File objFile = new File(strImageFullPath); File targetFile = new File(strImageFullPathWithoutExt + "_small" + strFileExtension); Image image = ImageIO.read(objFile); final int WIDTH = 150; final int HEIGHT = 150; Image thumbnailImage = image.getScaledInstance(WIDTH, HEIGHT, Image.SCALE_DEFAULT); BufferedImage objThumbnailBufferedImage = new BufferedImage(WIDTH, HEIGHT, BufferedImage.TYPE_INT_RGB); Graphics gfx = objThumbnailBufferedImage.getGraphics(); gfx.drawImage(image, 0, 0, null); gfx.dispose(); ImageIO.write(objThumbnailBufferedImage, strFileExtension.substring(1), targetFile); Just assume that few variables like strImageFullPath,strImageFullPathWithoutExt etc they exist. Thanks in advance :)

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  • change label text from a VB6 binary (not source code)

    - by Jun
    Hi, we have a VB6 binary executable that comes with no source code. And we need to change the label text for that VB6 application from "AAA" to "BBB". Is there any way or tools that can do that? The closest tool I can find right now is microsoft UISpy, it can read all the other elements but not the label. I hope there is a tool that can change the resource in the .exe so that the label "AAA" will read "BBB". Or is it possible to write a wrapper application, it will launch the .exe, examine the application screen for "AAA" and change that to "BBB"? Thank you for your help!

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  • Removing response.End() includes the html of the page.

    - by vinay_rockin
    HttpResponse response = Context.Http.Response; response.Headers.Clear(); response.Clear(); response.ContentType = Component.OverrideMimeType ? Component.MimeType : "application/download"; response.AppendHeader("Content-Disposition", String.Format("attachment; filename=\"{0}\"", HttpUtility.HtmlEncode(Path.GetFileName(file.FileName)))); response.OutputStream.Write(file.Contents, 0, file.Contents.Length); response.Flush(); // response.End(); if I use response.End() it throws exception and if I comment response.End() it includes the html of the page on which the download link resides. how want to download file with introducing this exta html. Any Idea how to fix this?

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  • Localizing a JSF 1.2 application with UTF-8 resources

    - by Filini
    (WARNING: this is my first java application, coming from .NET, so don't bash me if I write too much garbage) I'm developing a simple JSF 1.2 web application which should support Russian, Chinese, and other languages outside ISO 8859-1, which is automatically used in Properties.load(). Is there a way to use the Properties loaded from XML files, with Properties.loadFromXml(), inside JSF, without writing too much code? I know there are alternative ways to do so (writing my own loader, escaping the characters...), but I'd really love to find a simple solution, and I don't see it in all the forums I checked. Thanks in advance for any help

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