On Sun, Dec 13, 2009 at 11:51 PM, Eric Niebler
<eric@boostpro.com> wrote:
The Dude wrote:
Hello,
Boost::foreach is very useful for iterating over a sequence and doing something that depends only on the iterated element, e.g.,
<code>
BOOST_FOREACH(const Foo &f, foos)
cout << f.bar() << endl;
</code>
However, I often need to iterate over a sequence and do some operation that depends on both the iterated element and the iteration index. E.g., I would like something like
<code>
BOOST_FOREACH(size_t i, const Foo &f, foos)
cout << "The bar of element " << i << " is " << f.bar() << endl;
</code>
Is there an easy way to do so?
int index = 0;
BOOST_FOREACH(const Foo &f, foos)
{
// ... stuff ...
++index;
}
?
--
Eric Niebler
BoostPro Computing
http://www.boostpro.com