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• QR code (2D barcode) coding and decoding algorithms?

  - by Adam Davis

  Looking for free/opensource code or description of algorithms to code (simple) and decode (hard) the 2D barcode QR code. It doesn't seem like a trivial problem, but it's so popular in Japan that there must be something already available...

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• Code Golf: Evaluating Mathematical Expressions

  - by Noldorin

  Challenge Here is the challenge (of my own invention, though I wouldn't be surprised if it has previously appeared elsewhere on the web). Write a function that takes a single argument that is a string representation of a simple mathematical expression and evaluates it as a floating point value. A "simple expression" may include any…

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• Codility-like sites for code golfs

  - by Adam Matan

  Hi, I've run into codility.com new cool service after listening to one of the recent stackoverflow.com podcasts. In short, it presents the user with a programming riddle to solve, within a given time frame. The user writes code in an online editor, and has the ability to run the program and view the standard output. After final submission, the…

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• How can I coordinate code review tool and RCS (specifically git)

  - by Chris Nelson

  We're committed to git for code management. We're trying to find a tool that will help us systematize code reviews. We're considering Gerrit and Code Collaborator but would welcome other suggestions. We're having a problem answering the question, "How do we know every commit was reviewed?" (Or "What commits have yet to be reviewed?") One…

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• Do you still limit line length in code?

  - by Noldorin

  This is a matter on which I would like to gauge the opinion of the community: Do you still limit the length of lines of code to a fixed maximum? This was certainly a convention of the past for many languages; one would typically cap the number of characters per line to a value such as 80 (and more recnetly 100 or 120 I believe). As far as I…

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• how to create a thumbnail image with embedded video code

  - by Fero

  Hi all, How to create a thumbnail image with embedded video code. For example i am having the following embedded code: Now i need to display the thumbnail image of this video and while clicking on that thumbnail image the corresponding video must play. Now, My Prob is "HOW TO CREATE A THUMBNAIL IMAGE OF AN EMBEDDED VIDEO CODE" thanks…

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• PartCover code details

  - by user329814

  I am using PartCover 2.2/2.3(trying with both) on win 7 x64. After generating report and selecting view coverage details, I can see for each method the code coverage. When I click on a method I see on the right list with block, block length, visit count and has source(set to yes). However, it doesn't fill the code like shown here…

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• IoC / Dependency Injection - please explain code versus XML

  - by steve.macdonald

  I understand basically how IoC frameworks work, however one thing I don't quite get is how code-based config is supposed to work. With XML I understand how you could add a new assembly to a deployed application, then change the config in XML to include it. If the application is already deployed (i.e., compiled in some form) then…

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• Debug PyDev+Eclipse - Code not reloads after code change in breakpoint/suspend mode

  - by Chameleon

  I often doing such steps and want to optimize debug speed: I am setting some breakpoints. I am running Google Appengine Application (Python 2.5.2+). When breakpoint occur I often change code to fix bugs. After code change want to test again but there is problem if I changed code in breakpoint/suspend mode the application does…

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• Scala compiler says unreachable code, why?

  - by taotree

  I'm new to Scala... Here's the code: def ack2(m: BigInt, n: BigInt): BigInt = { val z = BigInt(0) (m,n) match { case (z,_) => n+1 case (_,z) => ack2(m-1,1) // Compiler says unreachable code on the paren of ack2( case _ => ack2(m-1, ack2(m, n-1)) // Compiler says unreachable…

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• Python editor with automatic code completion?

  - by netvope

  I have seen various articles about good Python editors/IDEs, like this. However, none of them points out whether the editors support automatic code completion. I tried notepad++, PyScript and Komodo Edit, but all of these requires a hotkey to invoke the code completion dialog. Do you know any Python editors with automatic…

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• IntelliSense has forgotten my code snippets!

  - by David

  Hi all I have a stack of code snippets imported into Visual Studio. Just recently, they have stopped displaying in Intellisense. If the keyboard shortcut doesn't bring up anything else on IntelliSense, then I can tab and the code snippet is inserted just fine. However, if the keyboard shortcut for the snippet happens to…

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• PHP code to convert text blocks indented by four spaces into a <pre><code> block [Markdown]

  - by Alfonso

  Hi, I'm not very good at PHP and would like to have a PHP function which turns this (text block indented by four spaces): printf("goodbye world!"); /* his suicide note was in C */ Into this: <pre><code> printf("goodbye world!"); /* his suicide note …

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• any way to know how many checkouts of my code have happened from code.google.com?

  - by Aadith

  I have hosted the code for one of my projects on code.google.com. While I am able to monitor incoming traffic to my project page using google analytics, I do not find a way to track how many checkouts of my code have happened. Is there any way to find details on checkouts that are happening?

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• How to preserve &amp; in <pre><code>

  - by Marcy Sutton

  I am having trouble preserving an ampersand in a code example on my blog, because all HTML entities start with &. Any tips? For example: <pre> <code> $pageTitle = str_replace('&', ' &amp;', $page->attributes()->title); </code> </pre> Renders as: $pageTitle =…

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• Generating C code from a Matlab-Simulink model for DSP C6748

  - by Juanma

  I'm trying to generate C code from a Matlab-Simulink simple model (eg.: sine wave generator with a DAC at the output). This code must be executed with Code Composer Studio for TMS320C6748 DSP (Texas Instrument C6748). Specifically, for the development board OMAP-L138 ZOOM ™EVM DEVELOPMENT KIT. For this,…

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• ASP.NET Error when referencing a code-behind variable

  - by mattgcon

  I have an aspx page that is supposed to reference a code-behind variable but I am receiving an error of "The name [variable] does not exist in the current context" Here is the aspx code <%@ Control Language="C#" AutoEventWireup="true" Inherits="IPAM.Website.Controls.controls_event_header"…

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• Agile and code release

  - by ring bearer

  Do you know of any agile process that is created for code releases? One of the main theme of agile is frequent releases and each company/client would have their own test/approval processes that control code releases. Most of the time these slow down the pace of "frequent releases" Currently…

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• code formatter for grails and Groovy?

  - by Jared

  I'm currently using a basic text editor to write my grails code. Does anyone know of a program that will automatically format code with indentation similar to indent does for C? I'd rather use a commandline program to do this but can use an IDE to format my code if that's the only option.

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• Testing your code before releasing to QA

  - by user279521

  I have heard developers say that people who write code should not be the ones testing it. I am looking for peoples experience in this situation. Many times I have done my share of development, then released to the QA dept and had the code sent back to me becuase some aspect of the…

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• If we have too much commented code in .net would it effect code performance?

  - by abbas

  if we have too much commented code in .net would it effect code performance?

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• How do code coverage tools work?

  - by Yassir

  How do code coverage tools like NCover know what parts of the code were executed and what was were not?

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• How can CruiseControl.Net fail a build based on changing metrics?

  - by skolima

  I would like CruiseControl.Net to fail a build when some code metrics change in a 'wrong' direction, i.e. code coverage decreases or Gendarme defect count increases. The Gendarme metrics are already tracked in report.xml file (because they are presented on web dashboard graphs),…

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• Why do I get Code Analysis CA1062 on an out parameter in this code?

  - by brickner

  I have a very simple code (simplified from the original code - so I know it's not a very clever code) that when I compile in Visual Studio 2010 with Code Analysis gives me warning CA1062: Validate arguments of public methods. public class Foo { protected static void Bar(out…

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• Unreachable code detected by using const variables

  - by Anton Roth

  I have following code: private const FlyCapture2Managed.PixelFormat f7PF = FlyCapture2Managed.PixelFormat.PixelFormatMono16; public PGRCamera(ExamForm input, bool red, int flags, int drawWidth, int drawHeight) { if (f7PF == FlyCapture2Managed.PixelFormat.PixelFormatMono8) {…

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