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I'm using Visual studio 2008 SP1 and I need to find a way to disable a specific warning while compiling at a high warning level. Is there something I can use to disable a warning for the whole project?
I know I can use this to disable/reenable it locally in the code:
#pragma warning( disable : 4100)
...do stuff
#pragma warning(default : 4100)
...but I would like something that is project wide.
Nevermind, I found that I can add:
/wd4100
in the command line for C/C++ settings to disable warning C4100 as an example.
...but I have another question. When I'm doing the below to free the memory of a std::vector<int>:
...I'm getting this warning at warning level 4:Code:theVector.clear();
theVector.swap(std::vector<int>());
The code is working to free the vector but if possible I'd like to get rid of the warning. What to do?Code:warning C4239: nonstandard extension used : 'argument' : conversion from 'std::vector<_Ty>' to 'std::vector<_Ty> &'
1> with
1> [
1> _Ty=int
1> ]
1> A non-const reference may only be bound to an lvalue
You just need to reverse a bit...
Soma
Code:std::vector<int>().swap(theVector);
Ok that seems to do the trick, thanks!Quote:
Originally Posted by phantomotap
If I can get a second opinion that would be great though. I need to be sure this is a safe way to do it.
Safe?
*shrug*
"Safe" doesn't enter into it. It is legal to call a method of a temporary. (That's why the "std::ofstream flush trick" works.) How you have been doing it is illegal.
Soma
Alright no offense, this will affect a lot of code if I do implement it so I just want to make sure it is a valid way and not just one persons leet haxx.;) Thanks for the extra info.Quote:
Originally Posted by phantomotap
Edit: I have read some other threads on the internet now and they point to the same thing as your example so it seems to be the way to go. Thanks.
O_o
I wasn't offended. I was only offering context by which to interpret the statements.
This is basically the same as "(some_std__string + "some c string").c_str()" which you'll find everywhere.
Soma
Ok, I thought you might have been offended because I wanted a second opinion and didn't trust your coding skills. Luckily it was not so.:) Thanks again.