On Friday, 29 January 2016 at 17:01:46 UTC, Adrian Matoga wrote:
On Friday, 29 January 2016 at 16:36:01 UTC, Steven
Schveighoffer wrote:
On 1/29/16 10:28 AM, Adrian Matoga wrote:
[...]
is(T) is supposed to be false if T is not a valid type.
I would agree with you that the static assert should fail.
-Steve
Oh, there's more:
// this should fail:
static assert(is(CallsFoo!NoFoo));
// this should fail too:
static assert(is(typeof({ alias Baz = CallsFoo!NoFoo; return
Baz.init; }())));
// and this:
static assert(__traits(compiles, { alias Baz = CallsFoo!NoFoo;
return Baz.init; }()));
// but only this fails:
alias Baz = CallsFoo!NoFoo;
https://issues.dlang.org/show_bug.cgi?id=15623
Haven't you seen my answer about constraint ?
If you put a constraint on your function template then invalid
instantiations are rejected. I mean... this language feature is
not just ornamental...
What do you think constraints are used for otherwise ^^
