Re: [Boost-users] BOOST_FOREACH with Index

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?

Why not: int index = 0; BOOST_FOREACH(const Foo &f, foos) { // ... stuff ... ++index; } ? -- Eric Niebler BoostPro Computing http://www.boostpro.com