#59 indexer

[Matt Wilson]

e.g.

{
std::copy( headers.begin(), headers.end()
, fastformat::format_iterator(fastformat::to_sink(::OutputDebugString), "{1}\t{0}\n", ff::indexer()));
}

{
int value = 1000;

std::copy( headers.begin(), headers.end()
, fastformat::format_iterator(fastformat::to_sink(::OutputDebugString), "{1}\t{0}\n", ff::indexer(&value, +1)));

ff::fmtln(std::cout, "value={0}", value);
}