D-Programming-Language/phobos — pull request #2556 by quickfur (2014-09-25 20:07:55+00:00)
Title: Fix 9906: unaryFun and binaryFun should recognize static opCall

Structs or classes with static `opCall` should be recognized as valid
function objects.

Fixes: https://issues.dlang.org/show_bug.cgi?id=9906