digitalmars.D.bugs - [Issue 17015] New: support final switch in std.variant
- via Digitalmars-d-bugs (28/28) Dec 22 2016 https://issues.dlang.org/show_bug.cgi?id=17015
https://issues.dlang.org/show_bug.cgi?id=17015 Issue ID: 17015 Summary: support final switch in std.variant Product: D Version: D2 Hardware: x86_64 OS: Linux Status: NEW Severity: enhancement Priority: P1 Component: phobos Assignee: nobody puremagic.com Reporter: greeenify gmail.com As e.g. in https://github.com/s-ludwig/taggedalgebraic: final switch (taggedAny.kind) { case Tagged.Kind.i: // It's "int i" break; case Tagged.Kind.str: // It's "string str" break; case Tagged.Kind.foo: // It's "Foo foo" break; } this has the advantage over visit that the compiler can enforce that all types are covered. --
Dec 22 2016