On Sunday, 12 April 2015 at 21:34:21 UTC, H. S. Teoh wrote:
On Sun, Apr 12, 2015 at 02:33:03PM +0000, ketmar via
Digitalmars-d-learn wrote:
On Sun, 12 Apr 2015 14:18:21 +0000, JR wrote:
> But the compiler has all the pieces of information needed to
> see
> it's wrong, doesn't it?
no, it doesn't. compiler doesn't know about
`std.format.format` and
it's special abilities. while it is possible to add such
checks to the
compiler, it will introduce interdependency between compiler
and
phobos, which is not desirable.
writing CTFE `writef` version is possible without template
bloat in
binary, but it will take more memory in compile time and slows
compilation. there were talks about having
`writef!"fmt"(args)` in
phobos, but nobody took that task yet.
It's not hard to write a CTFE version of writef/writeln/etc.,
that takes
the format argument at compile-time, since std.format itself is
already
CTFE-able.
Except for floating-point values (at least).
