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• How this pthread actually works?

  - by user289013

  I am actually on my project on compiler with SMP, and want to code with pthreads and heard about many parallel things open mpi and so on, So to start with how this thread is allocated to core while calling pthread,Is there any way to give threads to different cores by pthreads?

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• Translate C# code into AST?

  - by Erik Forbes

  Is it currently possible to translate C# code into an Abstract Syntax Tree? Edit: some clarification; I don't necessarily expect the compiler to generate the AST for me - a parser would be fine, although I'd like to use something "official." Lambda expressions are unfortunately not going to be sufficient given they don't allow me to use statement bodies, which is what I'm looking for.

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• Are comments compiled in to C# Silverlight Applications

  - by LarryDev

  Is it safe to store information such as usernames and passwords within comments in your source code? I am not worried about some getting access to my source but I am concerned in regards to someone decompiling my compiled silverlight XAP file. Is anybody 100% sure if the compiler strips off commented code. I would assume it does but I want to be sure. Thanks!

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• Does string concatenation use StringBuilder internally?

  - by JamesBrownIsDead

  Three of my coworkers just told me that there's no reason to use a StringBuilder in place of concatenation using the + operator. In other words, this is fine to do with a bunch of strings: myString1 + myString2 + myString3 + myString4 + mySt... The rationale that they used was that since .NET 2, the C# compiler will build the same IL if you use the + operator as if you used a StringBuilder. This is news to me. Are they correct?

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• What are some lesser known usages of #pragma?

  - by Xavier Ho

  I've never understood the need of #pragma once when #ifndef #define #endif always works. I've seen the usage of #pragma comment to link with other files , but setting up the compiler settings was easier with an IDE. What are some other usages of #pragma that is useful, but not widely known?

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• Thinking about introducing PHP/MySQL into a .NET/SQL Server environment. Thoughts?

  - by abszero

  I posted this over at reddit but it didn't gain any momentum. So here is what is going on: our company was recently purchased by another web shop and I was promoted to head of development here in our office. Our office is completely .NET/SQL Server and the company who purchased us is a *nix/PHP/MySQL shop. Now several of our large clients who are on the .NET platform are up for complete rewrites (the sites are from '04 and are running on the 1.x framework.) While reviewing the proposal for one client with my superior I came across a pretty extensive module which would require several hundred man hours to complete and voiced some concern about it in relation to the quote. One of the guys from the PHP group happen to hear this and told me of a module that they (PHP Group) use in Drupal that does exactly what the proposal in front of me was describing and it only took, at most, 8 hours to completely setup / configure. My superior suggested that I take a look at Drupal and the module in question over the weekend but stressed that we should only go that route if it really made sense. So this weekend I spun up a CentOS instance in VirtualBox and started playing around with Drupal. I am still fleshing it out so don't have a solid opinion on it just yet. Anyway I have some questions / fears that I was hoping progit could help me out in! Has anyone had experience doing this and, if so, how did it turn out? I am completely ignorant to what IDE's (if any) are available to for PHP. The last time I worked with PHP it was in Notepad and that was less than intuitive. So is there are more intuitive IDE out there for PHP dev? I don't want to scare my .NET guys. Since the merger all of our new business clients that have had relatively small websites have gone on Drupal with the larger sites going on .NET. My concern is that if they see a large site go onto Drupal that they might start getting anxious and start handing out their resumes. For the foreseeable future there are no plans to liquidate the .NET platform and really we can't just from a support standpoint. What would be the best way to approach this? Any other helpful info? Thanks!

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• .Net - Whats the difference between a Session Facade and Business Delegate?

  - by KP65

  What I understand so far: Business Delegate - In the presentation tier, as an ASP component, provides an interface for ASP views to access business components without exposing their API, therefore reducing coupling between the two. Session Facade - In the business tier, as a com+ component, encapsulates business objects, provides a course grain interface for views to access business components. Reduces coupling, hides complex business component interaction from views. So what is the actual difference? They seem pretty similar to me..

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• Cannot refer to the static enum field within an initializer ?

  - by 01

  I just got Java5 project that has this error, i tried using Java5 and Java6, but its still there. it worked somehow before(since it was in svn), how can i bypass that compiler error?

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• setting up netbeans for c

  - by leo

  i am really getting annoyed all i want to do is setup a compiler for c in netbeans - i donwloaded and followed the instructions for MiniGW, and now whenever i try to comnpile a programme it says ""Resolve missing native build tools" and the make command and debugger command fields are empty - can anyone help if not can someone tell me a good program i can just download to code in c with in windows thanks

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• simple IDE in C,link my program to gcc

  - by Moein Hoseini Manesh

  hi my friends, I wanna to write simple C compiler,I wrote some parts of it it can check synetic of C,now I need to link my program to gcc how can I do it? I wanna to link it,for example when user open file in my programm,gcc compile it and save it where the user want. now I don't now how to say gcc to complie this file,show error and ... [english is not my mother language,and my english is not so well,so I apologize for any mistake in my post or If I can't reached my mean]

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• Why does Go compile quickly?

  - by Evan Kroske

  I've Googled and poked around the Go website, but I can't seem to find an explanation for Go's extraordinary build times. Are they products of the language features (or lack thereof), a highly optimized compiler, or something else? I'm not trying to promote Go; I'm just curious.

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• Why can I set an anonymous enum equal to another in C but not C++?

  - by samoz

  I have the following code snippet: enum { one } x; enum { two } y; x = y; That will compile in C, but in C++, I get the following error: test.c:6: error: cannot convert ‘main()::<anonymous enum>’ to ‘main()::<anonymous enum>’ in assignment Can someone explain to me why this is happening? I would prefer an answer with some specifics about why the compiler behaves this way, rather than just "You can't do that"

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• Gimpel's PC-lint and Flexelint; Anyone used them?

  - by samoz

  So I've read a few magazine articles and the website for Gimpel's PC-lint and Flexelint C/C++ compiler. It's really expensive (at least for me), but it seems like it might have some merit to warrant the cost. So I'm wondering if anyone else has used/bought them and can provide their opinions?

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• Variable reference in a Groovy GString

  - by Maurits Rijk

  From the book "Groovy and Grails recipes" I'm using the following code snippet: String HelloLanguage = "def hello(language) {return \"Hello $language\"}" However, I get a compiler error "You attempted to reference a variable in the binding or an instance variable from a static context." because language can't be bound. What is wrong?

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• Compilation error with C++ templates. Is there any easy way to understand them?

  - by Naveen

  While working with the C++ templates (most of the time using STL or boost) I run into the compilation errors that are miles long. I find it hard to figure out what compiler is trying to tell me. Is there any quick reference guide or a tool which can convert this error into something more understandable to humans?

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• Elegent way to collapse or expand sub-sequences of a list in Python?

  - by forgot

  I want to collapse or expand sub-sequences of a list e.g. ['A', 'B', 'D', 'E', 'H'] -> ['AB', 'DE', 'H'] and vice versa currently I wrote some ugly code like: while True: for i, x in enumerate(s): if x == 'A' and s[i+1] == 'B': s[i:i+2] = 'AB' break else: break For people who asking 'why do that thing': Actually I'm working on a optimizing compiler and this is the peephole part. Writing pattern matching is a little annoying.

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• Is possible to generate constant value during compilation?

  - by AOI Karasu

  I would like my classes to be identified each type by an unique hash code. But I don't want these hashed to be generated every time a method, eg. int GetHashCode(), is invoked during runtime. I'd like to use already generated constants and I was hoping there is a way to make the compiler do some come computing and set these constants. Can it be done using templates? Could you give me some example, if it is possible.

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• What does S-attributed and L-attributed grammar mean?

  - by user203123

  I'm reading a compiler book and kinda confused when it says "a S-attribute grammar is also a L-attribute grammar". Couldn't understand. Can someone make it clear (an example should be great). Thanks.

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• which RDBMS or other tool provides good SQL syntax error messages?

  - by zzz

  I use MySQL and it gives no meaningful error messages beyond "syntax wrong close to something or other". This is in sharp contrast to the sort of nice, clear error messages we are used to getting from java compiler and similar. So, are there RDBMS or sql validation tools that provide clearer, meaningful error messages?

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• problem understanding templates in c++

  - by hidayat

  Template code is not compiled until the template function is used. But where does it save the compiled code, is it saved in the object file from which used the template function in the first place? For example, main.cpp is calling a template function from the file test.h, the compiler generates an object file main.o, Is the template function inside the main.o file? because template code is not inlined, is it?

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• Why compile + link when build a C++ code, instead of generating executable directly

  - by Dbger

  I was asked of this question when mentor an entry-level programmer, I was thinking of this compile + link process so official and usual that I never think about why. One thing I could think of is to improve the development productivity, but should there be any other more compiler-related reasons?

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• Could not load file or assembly 'Data' or one of its dependencies. Access is denied.

  - by Pinu

  I am trying to run the my asp.net mvc project on IIS 7 , I am trying to impersonate the user. Where Data is the data project of my application, i have added the dll reference to the asp.net mvc project I tried giving full control to very one to this folder C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET File. Any clue on how to fix this error?

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• Easy way to convert c code to assembly?

  - by Bob

  Is there an easy way (like a free program) that can covert c/c++ code to x86 assembly? I know that any c compiler does something very similar and that I can just compile the c code and then disassemble the complied executable, but that's kind of an overkill, all I want is to convert a few lines of code. Does anyone know of some program that can do that?

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• Invalid use of 'void' in C++ when using struct and classes

  - by Aaron Haaf

  I have 1 compiler error. It is from this line in my code: cout << myClass->Get_Type().discription; Where as Get_Type() is: void Tile::Get_Type() { return &myStruct; } I'm not quite sure what I am doing wrong. Or what for that matter could be going wrong.

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• C++: Trouble with tr1::bind (C2065)

  - by Rosarch

  I'm getting a compiler error with bind: using namespace std; bool odp(int arg1, int arg2); // ... find_if(vec.begin(), vec.end(), tr1::bind(odp, iValue, _1)); // C2065 My goal is to curry odp(), so its first argument is iValue, and apply that function in find_if. The error: C2065: '_1' : undeclared identifier. What am I doing wrong?

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