writefln patterns with mismatching compile-time known number of arguments

[H. S. Teoh via Digitalmars-d-learn]

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.

All it takes is for somebody to step up to the plate and implement it.


T

-- 
Genius may have its limitations, but stupidity is not thus handicapped. -- Elbert Hubbard