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C Program Works in GDB But Not Normally

By : Matt Seweryniak
Date : October 18 2020, 01:08 AM
help you fix your problem If you look at the docs for pthread_create, it says, void *(*start_routine) (void *). That means it needs a pointer to a function that takes a void * and returns a void *. You have no such function anywhere in your code. So how can you pass a pointer to such a function to pthread_create?
You do have this:
code :
     pthread_create(&callThd[i], &attr, removeNoise(arra1, noiseList1),        
     (void *)i); 

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TCP works in GHCi, buffered until program exit in program compiled with Leksah

By : user3034385
Date : March 29 2020, 07:55 AM
around this issue Hmm, it seems Leksah wasn't actually building the app when I thought it was. I must have been running old code without the hSetBuffering call. A clean & rebuild has sorted it out. Apologies and thanks to everyone for your time and help.
edit: Found it - in case anyone else gets confused by this, when package->build is clicked, Leksah does not generate a compiled app if it's in debug/ghci mode.

Program generated by mkbundle (from C# program) works on Ubuntu, but doesn't work on Redhat

By : Randy Hayward
Date : March 29 2020, 07:55 AM
this one helps. In general producing one binary for different linux distros is a painful and difficult endeavour, in particular if you don't know much about linux. The problem is that binary compatibility between distros (or even different versions of the same distro) is rare.
My suggestion would be to distribute the managed assembly (i.e. not run the program through mkbundle), but I realize there might be good reasons you're not doing it. The other option is to run mkbundle on a system similar to your client's, and ship that version to him.

How can I automatically create an ID in the program? (The program works with files)

By : Chavan
Date : March 29 2020, 07:55 AM
it fixes the issue Your solution definitely isn't thread-safe, and if multiple instances tried to calculate the "next ID" at the same time then they can easily collide.
Does the underlying data source have a way to track this?
code :
var nextID = Guid.NewGuid();
var nextID = Guid.NewGuid().GetHashCode();
public virtual int CreateAutomicId()
    return Guid.NewGuid().GetHashCode();

Program works fine in VS 2008, throws exception in VS 2010 at the very end of program

By : Jerimio
Date : March 29 2020, 07:55 AM
seems to work fine Your class Feil contains string dato, so it's not trivially copyable. Therefore it's illegal to write and read it as raw binary data.
What happens if you do it? std::string contains a pointer to character array, so you write its value, not content. When you read it, you read the same value into the pointer, but it's pointing to garbage.

Gray image from Webcam with Opencv C program but C++ program works perfectly

By : user3313528
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , If you are using OpenCV 3.0 You should not be using the C API. It is deprecated, either use an old version of OpenCV (if you need the C API) or just use C++. There is no way of solving this issue whilst using 3.0
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