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• How To Deliberately Hide Bugs In Code (for use in a Novel I'm writing) [closed]

  - by Dennis Murphy

  I'm writing a novel in which an evil programmer wants to include subtle errors in his code that are likely to go unnoticed by his supervisor during a code review and unlikely to be caught by a compiler, yet cause damage at possibly random times when the program is executed by an end-user. I only need a couple of examples, which may be exotic but which have to be easily explainable to non-technical readers. Procedural or object-oriented examples would be equally helpful. (It's been a VERY long time since I've written any code.) Thanks for your help.

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• Is it bad style to redundantly check a condition?

  - by mcwise

  I often get to positions in my code where I find myself checking a specific condition over and over again. I want to give you a small example: suppose there is a text file which contains lines starting with "a", lines starting with "b" and other lines and I actually only want to work with the first two sort of lines. My code would look something like this (using python, but read it as pseudocode): # ... clear_lines() # removes every other line than those starting with "a" or "b" for line in lines: if (line.startsWith("a")): # do stuff if (line.startsWith("b")): # magic else: # this else is redundant, I already made sure there is no else-case # by using clear_lines() # ... You can imagine I won't only check this condition here, but maybe also in other functions and so on. Do you think of it as noise or does it add some value to my code?

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• Languages with C/C++ output [closed]

  - by Vag

  Which languages have compilers able to emit plain standard C/C++ code? For a start: Haxe // uses Boehm GC Haskell (JHC) Haskell (old GHC) // -fvia-c, removed recently (emitted code is super ugly) Clay ATS Cython RPython (Shed Skin) // experimental RPython (PyPy) Python (Nuitka) // although author claims there are no speedups Common Lisp (ECL) COBOL (OpenCobol) Scheme (Chicken) APL // So far I've not found working implementation available for free download Ur/Web // GCC-specific output, and intended to be used only for web developments (included for completeness only) I'd like to build comprehensive up-to-date list but found only these ones so far. I've tested only Haxe and it works pretty well and quite fast. What about other ones? What is your expirience? How much ugly is generated code? Update. Any language chains (e.g. X - Scheme - C) will be perfectly OK as answer if its use is practical enough and suited for production use.

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• Test Driven Development Code Order

  - by Bobby Kostadinov

  I am developing my first project using test driven development. I am using Zend Framework and PHPUnit. Currently my project is at 100% code coverage but I am not sure I understand in what order I am supposed to write my code. Am I supposed to write my test FIRST with what my objects are expected to do or write my objects and then test them? Ive been working on completing a controller/model and then writing at test for it but I am not sure this is what TDD is about? Any advice? For example, I wrote my Auth plugin and my Auth controller and tested that they work properly in my browser, and then I sat down to write the tests for them, which proved that there were some logical errors in the code that did work in the browser.

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• Deferent ways of solving problems in code.

  - by Erin

  I now program in C# for a living but before that I programmed in python for 5 years. I have found that I write C# very that most examples I see on the web. Rather then writing things like: foreach (string bar in foo) { //bar has something doen to it here } I write code that looks like this. foo.ForEach( c => c.someActionhere() ) Or var result = foo.Select( c => { //Some code here to transform the item. }).ToList(); I think my using code like above came form my love of map and reduce in python while not exactly the same thing the concepts are close. Now it's time for my question. What concepts do you take and move with you from language to language. That allow you to solve a problem in a way that is not the normal accepted solution in that language?

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• Simplicity-effecincy tradeoff

  - by sarepta

  The CTO called to inform me of a new project and in the process told me that my code is weird. He explained that my colleagues find it difficult to understand due to the overly complex, often new concepts and technologies used, which they are not familiar with. He asked me to maintain a simple code base and to think of the others that will inherit my changes. I've put considerable time into mastering LINQ and thread-safe coding. However, others don't seem to care nor are impressed by anything other than their paycheck. Do I have to keep it simple (stupid), just because others are not familiar with best practices and efficient coding? Or should I continue to do what I find best and write code my way?

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• Try/Catch or test parameters

  - by Ondra Morský

  I was recently on a job interview and I was given a task to write simple method in C# to calculate when the trains meet. The code was simple mathematical equation. What I did was that I checked all the parameters on the beginning of the method to make sure, that the code will not fail. My question is: Is it better to check the parameters, or use try/catch? Here are my thoughts: Try/catch is shorter Try/catch will work always even if you forget about some condition Catch is slow in .NET Testing parameters is probably cleaner code (Exceptions should be exceptional) Testing parameters gives you more control over return values I would prefer testing parameters in methods longer than +/- 10 lines, but what do you think about using try/catch in simple methods just like this – i.e. return (a*b)/(c+d); There are many similar questions on stackexchnage, but I am interested in this particular scenario.

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• Preparing to release code as open-source

  - by Raphael

  I have developed a fully functional tool which I would like not only to share with anyone interested but also get support from the community. This tool is cross-platform, written in C++ with Qt, the code is well commented but I still lack any documentation. There are also some small issues and improvements to be made before I can call it a stable, final version. What are the first steps that I have to take to release code as open-source and attracting people interested in contributing? This is my first serious attempt to release open-source code and I really don't know where to start. Should I just push it to Github put together a small wiki and pray for the best?

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• New code release today - 2011.1.4.2

  - by Steve Tunstall

  Wow, two blog entries in the same day! When I wrote the large 'Quota' blog entry below, I did not realize there would be a micro-code update going out the same evening. So here it is. Code 2011.1.4.2 has just been released. You can get the readme file for it here: https://wikis.oracle.com/display/FishWorks/ak-2011.04.24.4.2+Release+Notes Download it, of course, through the MOS website. It looks like it fixes a pretty nasty bug. Get it if you think it applies to you. Unless you have a great reason NOT to upgrade, I would strongly advise you to upgrade to 2011.1.4.2. Why? Because the readme file says they STRONGLY RECOMMEND YOU ALL UPGRADE TO THIS CODE IMMEDIATELY using LOTS OF CAPITAL LETTERS. That's good enough for me. Be sure to run the health check like the readme tells you to. 

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• Using T[1] instead of T for functions overloaded for T(&)[N]

  - by Abyx

  The asio::buffer function has (void*, size_t) and (PodType(&)[N]) overloads. I didn't want to write ugly C-style (&x, sizeof(x)) code, so I wrote this: SomePacket packet[1]; // SomePacket is POD read(socket, asio::buffer(packet)); foo = packet->foo; But that packet-> looks kinda weird - the packet is an array after all. (And packet[0]. doesn't look better.) Now, I think if it was a good idea to write such code. Maybe I should stick to unsafe C-style code with void* and sizeof? Upd: here is another example, for writing a packet: SomePacket packet[1]; // SomePacket is POD packet->id = SomePacket::ID; packet->foo = foo; write(socket, asio::buffer(packet));

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• Layering Design Pattern in Java clean code style

  - by zeraDev

  As a Java developer, I am developing trying to use the clean code rules. But in my team we are facing a concrete problem: We have a business layer offering a service called "createObject", this service makes a lot of operation which can result to problem. E.g: parentObjectDontExist, objectAlreadyExist, dontHaveAuthorizationToCreate, operationFailed... and we want the UI using this service to display different information messages depending which error occurred. In old java dev, we should have create all signed exception type and throw it in createObject. As Clean code says, it is forbidden to use Exception for business logic AND signed exceptions are evil... Why not...But i don't know how to solved this problem and i don't want to use return code. How do you do? Thanks for youre experience return.

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• Writing and Understanding code

  - by Kitex

  I can write code. I can read code but I can't implement good code. How to develop deep understanding of any framework or stuff that we are working on? Is it looking into documentation and working on it? I have seen in this form that people that have great understanding of things they are working on. How is this possible? How to not scrape on the surface only? How to manage time vs learning vs productivity?

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• Workflow of sharing code for small teams

  - by Mihalis Bagos

  Problem is, we have developed a small CMS, that is different per implementation (currently). Of course development of this is never complete. Sometimes, we are working on more than one project that implements it (by copying-pasting the code files of the CMS to each project), and we add a new feature that we want to share on other projects as well (these can be small ones too, ie a custom ajax JSON controller - we use MVC) What we want to do is quickly and uniformly share the code with all other projects, via a version control system (or something similar), and generally organize the workflow as we know this isn't a very good workflow that we have. What would you suggest? Also, at the momment, the software we use is Visual Studio 2010, so we are strongly considering TFS, but even if we get it we still don't know the ideal workflow, or even if TFS supports what we want to do. Edit: Also note, we have specific implementations that have modifications over the CMS base that we want to KEEP only in the project area. (ie: a specific feature that we DONT want to share with the base CMS code)

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• What is the Ubuntu equivalent of the Windows programs Belarc or PC Wizard?

  - by CeltaWeb

  I provide technical support for several high schools in Spain and I have been building up a inventory of the schools machines. On the windows only computers I normally run PC Wizard to quickly get a good overview of the machines hardware, software and network settings. Is there an equivalent tool preferable with a GUI and an export option to html or pdf in Ubuntu. I have tried a few options such as: Gnomes gconf-editor hardinfo (GUI) lshw (CLI) I'm just looking for an all in one application that builds a detailed profile of the installed software, hardware and network setting of a particular machine. I have found Sysinfo which is quite good, it displays the most important hardware info and allows you to save it to a text file with a neat GUI. I'm still looking for a more complete solution but it's a good start.

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• Encouraging business and team members to write more code

  - by Aliixx

  I am really interested to hear any ideas or working practices that can be adopted to encourage our team of developers to write more code. A little background here is involves a team of varying disciplines, experience and qualities and the nature of the work has a large focus on bug fixes and business logic / data validation over writing lots of new greenfield code or even refactoring. We are attempting to move to a more Agile philosophy and really what would be great is to hear any ideas that can be sold to the team and / or the business with the aim of: Writing more new code to improve experience, abilities and increase exposure to newer and emerging patterns and practices. Energizing the effort of the team and inspire. Encouraging wider input of new ideas, patterns and practices from the team as a whole. I would be very interested (and grateful) to hear any ideas or examples of ideas that can help here. Thanks!

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• sum with matlab code

  - by user27089

  i need help it is only put sum in a code line if you can understand in below i have a code in this line below -> X(i,k+1) = X(i,k) + (( X(j,k)-X(i,k))); i want to change it as: X(i,k+1) = X(i,k) + sum(( X(j,k)-X(i,k))); briefly how can I put sum on the code line clear;rand('state', 1); global xLocation; N = 4; xLocation = rand(N,1); t=2;k=1;X=[N,t]; for i=1:N X(i,1)=xLocation(i); end while( k < t ) for i = 1 : N for j = 1 : N X(i,k+1) = X(i,k) + (( X(j,k)-X(i,k))); end end k = k + 1; end

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• Why does Java tell me my applet contains both signed and unsigned code?

  - by JohnCooperNZ

  My signed Java applet has been running fine until Java update 19. Now some but not all of our users on Java Update 19 report a java security message stating that our applet contains both signed and unsigned code. The process for creating our applet is as follows: 1: Clean and Build the applet project in Netbeans IDE. 2: Open the Applet jar file in WinRAR and add the required mysql JDBC driver .class files to the jar file. 3: Sign the applet jar file. Can someone please tell me how to determine what code is signed and what code is not signed in our applet? Is there a better way to include the mysql JDBC driver jar file in our applet other than copying the jar file contents into our applet jar file? Thanks

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• why licenced code is packed and then is reviewable using Disassembler at the same time ?

  - by Asad Butt

  Is it legal / ethical to copy code for any reason, or utilize it (like code review) from the .Net framework or any other .Net based API using Reflector or similar tools ? If it is, what advantages do Microsoft and other licence based softwares have for packing there code ? If it is not, Why can we use ILDasm and Reflector ? Another way of saying this is Why to pack it up if it is fine to review it ? probably I am missing some bits in the question, any one who feels, could ask this question in a better way, is most welcome to edit. Thanks

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• Minimum Acceptable Code Coverage Numbers in the real world.

  - by Pita.O

  Hi, I am in the middle of putting together some guidelines around code coverage and I want to specify a number that really makes sense. It's easy to repeat the 100% mantra that I see all over the internet without considering the cost benefit analysis and when diminishing returns actually sets in. I solicit comments from persons who have actually reported code coverage on real-life, medium/large-sized projects. What percentages were you seeing? How much is too much? I really want some balance (in figures) that will help developers produce hight quality code. Is 65% coverage too low to expect? Is 80% too high?

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• Java JDK Source Code?? Where to find it?

  - by Martijn Courteaux

  Hi, I like to see what a method in the Java API does. So I want the JDK Source Code. Before I re-installed Linux I had the scr.sip file with all the code in it. I just had to tell Eclipse this file and I could see the code. But now I haven't the file anymore... So the question is: Where can I find it? Please don't paste the Google results here. I searched already long, but I can't find it... I need just that file. Please be sure if it is the correct file before you answer. Answering by giving an URL is enough for me. Thanks in advance Martijn

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• Is it possible to get code coverage data for a GWT web app running tests from the web browser?

  - by jeff

  I am not sure if this is possible but I would like some way to get code coverage information for tests that are written in Quick Test for our GWT based web app. It does not seem like there is any solution because the Quick Test Pro tests are testing against the GWT compiled app and not the original java code in which the app was written. I suppose I could get coverage data on the javascript that the GWT compiler creates, but there would be no way for me (that I know of) to map this information back to the original java code. Is there some way to do this?

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• How to code a batch file to copy and rename the most recently dated file?

  - by david.murtagh.keltie.com

  I'm trying to code a batch file to copy only the most recently dated file in a given folder to another directory on the local machine, and simultaneously rename it as it does. I've found a very similar question here http://stackoverflow.com/questions/97371/batch-script-to-copy-newest-file and have managed to cobble together the below code from other forums too, but have hit a brick wall as it only results in the batch file itself being copied to the destination folder. It doesn't matter to me where the batch file itself sits in order for this to run. The source folder is C:! BATCH and the destination folder is C:\DROP The code is below, apologies if this is a glaringly obvious answer but it's literally the first foray into coding batch files for me... Thanks! @echo off setLocal EnableDelayedExpansion pushd C:\! BATCH for /f "tokens=* delims= " %%G in ('dir/b/od') do (set newest=%%G) copy "!newest!" C:\DROP\ PAUSE

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• What's the best example of pure show-off code you've seen?

  - by Damovisa

  Let's face it, programmers can be show-offs. I've seen a lot of code that was only done a particular way to prove how smart the person who wrote it was. What's the best example of pure show-off code you've seen (or been responsible for) in your time? For me, it'd have to be the guy who wrote FizzBuzz in one line on a whiteboard during a programming interview. Not really that impressive in the scheme of things, but completely unnecessary and pure, "look-what-I-can-do". I've lost the original code, but I think it was something like this (linebreaks for readability): Enumerable.Range(1,100).ToList().ForEach( n => Console.WriteLine( (n%3==0) ? (n%5==0) ? "FizzBuzz" : "Fizz" : (n%5==0) ? "Buzz" : n ) );

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• How can the Kindle be used as a source code reading tool?

  - by Homer6

  I'm a programmer. I want to be a better programmer. I want to read more source code written by other people (especially open source projects). Also, I'd like to be able to have a on-hand searchable reference to all of that source code so that I can pull up reference to structures and snippets. Does anyone know of a way to use the Kindle for this? Has anyone tried? What were your findings? Additionally, does anyone know of a website that indexes all open source source code?

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• Code Signing Identity does not match in my keychain, for mac app store developing?

  - by larntin

  hi, 1, I already download the "Apple Worldwide Developer Relations Certification Authority",and add it into my keychain. 2, My team leader already had created two Cers for Mac App store developing, I download and add it into my keychain. 3, I used two methods to sign my add, but failed all. First, add code sign section in my .xcodeproj(3.2.5). Second, I used script: productbuild --component ./bin/MAS_Release/MyApp.app /Applications --sign "3rd Party Mac Developer Application: My Company Co., Ltd." --product ./src/MyApp/MyApp-Info.plist MyApp.pkg But it failed with information: Code Signing Identity '3rd Party Mac Developer Application: My Company Co., Ltd.' does not match any valid, non-expired, code-signing certificate in your keychain. I observed that my certifications in keychain don't have small trangle. how make the small trangle absence?(when I'am importing the Cers from my Agent, it don't have the trangle absence)

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