writefln patterns with mismatching compile-time known number of arguments

[ketmar via Digitalmars-d-learn]

On Sun, 12 Apr 2015 14:31:40 -0700, H. S. Teoh via Digitalmars-d-learn
wrote:

> 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.

i didn't know that (didn't checked, actually), so i rewrote simple string 
and number formatters in my iv.writer. anyway, `std.format` will allocate 
on "%40s", i believe, which is completely unnecessary for `write`, as one 
can write by arbitrary sized chunks.
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