digitalmars.D.bugs - [Issue 19775] New: multiple argument string mixin doesn't expand
- d-bugmail puremagic.com (30/30) Mar 30 2019 https://issues.dlang.org/show_bug.cgi?id=19775
https://issues.dlang.org/show_bug.cgi?id=19775 Issue ID: 19775 Summary: multiple argument string mixin doesn't expand tuples Product: D Version: D2 Hardware: All OS: All Status: NEW Severity: normal Priority: P1 Component: druntime Assignee: nobody puremagic.com Reporter: b2.temp gmx.com Splitted from 19442 passing a template parameter list does not expand the arguments: enum x1 = 1; enum makeIdent(args...) = mixin(args); pragma(msg, makeIdent!("x", 1)); // Error: undefined identifier `tuple` // Using this works but only for two arguments enum makeIdent(args...) = mixin(args[0], args[1]); pragma(msg, makeIdent!("x", 1)); // Output: 1 Here's the real code I was working on (like compile-time std.conv.text but probably more efficient): enum ctText(args...) = mixin("`", args, "`"); pragma(msg, ctText!(5, " bottles")); // Output: tuple(5, " bottles") Above, args is not implicitly expanded. // This works but only for two arguments enum ctText(args...) = mixin("`", args[0], args[1], "`"); static assert(ctText!(5, " bottles") == "5 bottles"); --
Mar 30 2019