HH\Lib\Vec\map_with_key

This API is part of the Hack Standard Library, not HHVM itself.

Returns a new vec where each value is the result of calling the given function on the original key and value

namespace HH\Lib\Vec;

function map_with_key<Tk, Tv1, Tv2>(
  KeyedTraversable<Tk, Tv1> $traversable,
  (function(Tk,Tv1):Tv2) $value_func,
): vec<Tv2>;

Parameters