On 09/19/2015 10:30 PM, H. S. Teoh via Digitalmars-d-learn wrote:
On Sun, Sep 20, 2015 at 05:21:03AM +0000, WhatMeWorry via Digitalmars-d-learn
wrote:
[...]
Thanks. But now I have an even more fundamental problem. I keep
getting a FieldNameTuple is not defined. But I've clearly got the
import statement. I even copied the example from Phobos verbatim:
import std.traits;
struct S { int x; float y; }
static assert(FieldNameTuple!S == TypeTuple!("x", "y"));
You need to use is(...) when comparing types:
static assert(is(FieldNameTuple!S == TypeTuple!("x", "y")));
HTH,
--T
True but ever-confusingly, they are not types. :) It works without the
is expression. Otherwise, we need to add typeofs as well:
static assert(is(typeof(FieldNameTuple!S) == typeof(AliasSeq!("x", "y"))));
Ali
