I don't like the syntax I saw somewhere earlier in the thread of
0..iter.captures.captures looks like it should be a set of captures, not a count. This is a need that comes up again and again -- querying the size, or count, or length of some sub-element like this -- so I think it would greatly benefit Phobos to choose some less ambiguous convention and stick to it. Like nCaptures, numCaptures, capturesLength, etc. ---bb
