On Monday, 16 January 2017 at 11:54:23 UTC, Stefan Koch wrote:
On Sunday, 15 January 2017 at 12:53:04 UTC, Nordlöw wrote:
Why is there both
http://dlang.org/phobos/std_traits.html
and the builtin
https://dlang.org/spec/traits.html
?
Should we modify std.traits to make use of __traits? I've
noticed measurably faster compilations with __traits instead
of std.traits for simple things such as isIntegral,
isUnsigned, etc.
If so, I'll happily make that happen!
There is a simple reason, you don't want complicated
type-introspection logic welded into the compiler.
The reason why std.traits it slow is because of inefficiencies
inside the template-system, which I intend to fix.
Therefore your efforts would be wasted.
I believe it still makes sense, since the logic need not to be
applied both in the standard library and the compiler, when the
compiler can deliver the information to the standard library, the
standard library should use that information and at most wrap
around it, not attempt to create an identical logic to that of
the compiler.
