Member Avatar for Xorlium

Hi,

If I have a std::vector of objects and I need to iterate through all its elements, is it faster to do:

for (vector::iterator i = myvec.begin(); i != myvec.end(); ++i)
    //blah

or

for (int i = 0; i < myvec.size(); ++i)
   // myvec[i] blah

Or are they equally fast?

Thanks
Xorlium

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  • Latest Post Latest Post by mrnutty
Member Avatar for Narue

As far as it likely matters to you, they're equally fast.

Member Avatar for mrnutty

The second one would probably use less memory. And normally you would use the second one unless you have a compelling reason to use the first.

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