There's an undocumented function (2 overloads) called topNIndex that's still sitting in std.algorithm.package, 'cos I have no idea what it does and where it belongs.
1) Do we still want this function? 2) There's a bunch of dead code that has been commented out since 2009, including a function named topNIndexImpl. Does that mean that topNIndex is also dead code? 3) What is this function supposed to do? (OK OK, I can just read the code, but I figured it's faster to ask here. :-P) 4) Should we keep it, or should we chuck it? T -- This is not a sentence.
