c++ - kill unsigned / signed comparison error -

in general, want warnings of unsigned vs signed.

however, in particular case, want suppressed;

std::vector<blah> blahs;  for(int = 0; < blahs.size(); ++i) { ... 

i want kill comparison.

thanks!

(using g++)

you should fix, not suppress. use unsigned type:

for (size_t = 0; < blahs.size(); ++i) 

you can use unsigned, size_t more appropriate here (and may have different, larger, range). if you're using i iterate , don't need value in loop, use iterators instead:

for (auto iter = blahs.begin(), end = blahs.end(); iter != end; ++iter) 

if compiler not support auto, replace auto t::iterator or t::const_iterator, t type of blahs. if compiler supports fuller subset of c++11, though, this:

for (auto& element : blahs) 

which best of all.

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strictly speaking, above not "correct". should be:

typedef std::vector<blah> blah_vec; blah_vec blahs;  (blah_vec::size_type = 0; < blahs.size(); ++i) 

but can verbose, , every implementation know uses size_t size_type anyway.

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if reason need signed integer type i, you'll have cast:

// assumes size() fit in int (int = 0; < static_cast<int>(blahs.size()); ++i)  // assumes not negative (so use unsigned type!) (int = 0; static_cast<size_t>(i) < blahs.size(); ++i)  // , technically correct way, assuming not negative (int = 0; static_cast<blah_vec::size_type>(i) < blahs.size(); ++i)