Re: difference between i++ and ++i in a for loop

James Kanze <>
Thu, 19 Feb 2009 02:37:13 -0800 (PST)
On Feb 18, 11:56 pm, Alexander Gutenev <> wrote:

On 18 =C6=C5=D7, 01:46, James Kanze <> wrote:

Depending on the types involved, and how the compiler
handles them, there may be a difference in performance.
\u0161At least, people keep claiming this; I've done a lot
of measurements, and I've never been able to find any; I
think it's one of those myths that people like to

For int there would not be any differene, but you can see the
diference on the code like:
for (std::set<int>::iterator i = s.begin(); i != s.end(); ++i);
for (std::set<int>::iterator i = s.begin(); i != s.end(); i++);

I didn't see it when I measured. I measured *all* of the
iterators in the standard library (using the g++
implementations), and found no difference for any of them.

James Kanze (GABI Software)
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