https://issues.dlang.org/show_bug.cgi?id=16034
Issue ID: 16034 Summary: map should be possible with a reference only Product: D Version: D2 Hardware: x86_64 OS: Linux Status: NEW Severity: normal Priority: P1 Component: phobos Assignee: nob...@puremagic.com Reporter: greensunn...@gmail.com the following doesn't work: void main() { struct One { int entry = 1; @disable this(this); } One[] ones = [One(), One()]; import std.algorithm.iteration: map; import std.algorithm.comparison: equal; assert(ones.map!`a.entry + 1`.equal([2, 2])); } foo.d(12): Error: template std.algorithm.iteration.map!"a.entry + 1".map cannot deduce function from argument types !()(One[]), candidates are: /usr/include/dlang/dmd/std/algorithm/iteration.d(450): std.algorithm.iteration.map!"a.entry + 1".map(Range)(Range r) if (isInputRange!(Unqual!Range)) (It doesn't matter whether string or real lambda are used) --