iterator adapter to iterate just the values in a map?

Question

I\'m just getting back into C++ after a couple of years of doing a lot of C#, and recently Objective C.

One thing I\'ve done before is to roll my own iterator adapte

Answer 1

There is a boost range adaptor for exactly this purpose. See http://www.boost.org/doc/libs/1_53_0/libs/range/doc/html/range/reference/adaptors/reference/map_values.html

(This example cribbed from there)

int main(int argc, const char* argv[])
{
    using namespace boost::assign;
    using namespace boost::adaptors;

    std::map input;
    for (int i = 0; i < 10; ++i)
    input.insert(std::make_pair(i, i * 10));

    boost::copy(
        input | map_values,
        std::ostream_iterator(std::cout, ","));

    return 0;
}