D-Programming-Language/phobos — pull request #998 by lomereiter (2012-12-09 18:15:12+00:00)
Title: changed return type of NWayUnion.front to auto ref

NWayUnion seems to be the only bad guy in `std.algorithm` who uses `ref ElementType` to return `front`. This bugged me when I tried to use it with `std.algorithm.map`.