Re: Amazing Performance Difference between vec[] and iterators

[Ulrich Lauther]

Paulo Matos <pocmatos@gmail.com> wrote:
: Hi all,

: I've wanted to know if there was any performance difference between
: using:
: for(vector<int>::const_iterator it = v.begin(); it != v.end(); ++it)

: and

: for(unsigned int k = 0; k < v.size(); ++k)

Try

unsigned int size = v.size();
for (unsigned int k = 0; k < size; ++k)

in your version size() is evaluated size times

: Cheers,


-- 
        -lauther

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Ulrich Lauther          ph: +49 89 636 48834 fx: ... 636 42284
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