digitalmars.D.bugs - [Issue 10127] New: TypeEnum in std.variant
- d-bugmail puremagic.com (38/38) May 21 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10127
- d-bugmail puremagic.com (6/6) May 21 2013 http://d.puremagic.com/issues/show_bug.cgi?id=10127
http://d.puremagic.com/issues/show_bug.cgi?id=10127 Summary: TypeEnum in std.variant Product: D Version: D2 Platform: All OS/Version: All Status: NEW Severity: enhancement Priority: P2 Component: Phobos AssignedTo: nobody puremagic.com ReportedBy: diggsey googlemail.com It would be useful to use the tag part of a tagged union on its own, and it would fit in well with the rest of std.variant. It's not always the case that you want to store actual data, sometimes you just need to store the type. Also sometimes you need to store the data somewhere else or store it in such a way that you can specify the type first and fill in the data later. eg. alias TypeEnum!( void, byte, short, string, Object ) TestTypeEnum; TestTypeEnum test; assert(test == TestTypeEnum.from!void); assert(test != TestTypeEnum.from!byte); test = TestTypeEnum.from!string; assert(test == TestTypeEnum.from!string); assert(test != TestTypeEnum.from!Object); static assert(!__traits(compiles, TestTypeEnum.from!float)); (pull request shortly) -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 21 2013
http://d.puremagic.com/issues/show_bug.cgi?id=10127 https://github.com/D-Programming-Language/phobos/pull/1298 -- Configure issuemail: http://d.puremagic.com/issues/userprefs.cgi?tab=email ------- You are receiving this mail because: -------
May 21 2013