https://issues.dlang.org/show_bug.cgi?id=18405
Issue ID: 18405 Summary: std.getopt should support std.typecons.Flag out of the box Product: D Version: D2 Hardware: All OS: All Status: NEW Keywords: bootcamp Severity: enhancement Priority: P1 Component: phobos Assignee: nob...@puremagic.com Reporter: greensunn...@gmail.com I know that the following works already: --- import std.getopt, std.typecons, std.stdio; void main() { auto args = ["foo", "-u"]; alias U =Flag!"foo"; U flag = U.no; getopt(args, "u", { flag = U.yes; }, ); flag.writeln; } --- https://run.dlang.io/is/46u8Rx But Flag is such a common type and "built-in" in Phobos, s.t. getopt should really support it. --