On Sun, Oct 5, 2008 at 10:10 AM, NotFound <[EMAIL PROTECTED]> wrote: > But a fake signature makes errors harder to find and can make > optimized builds works different as normal ones.
I'm not sure how the signature is "fake". An unsigned integer is a subset of integer. Parrot doesn't have a set of $U registers for unsigned ints, does it? I suppose the routine that's directly called from PIR could be wrapped by a separate one that gets called from Perl6 by way of the stricter signature. Although, for the record, on my part this is a purely philosophical debate about signatures vs implementation and where the constraints belong, etc. As far as substr() itself goes, I would rather see it be permissive and allow negative lengths. But unlike Perl 5, I'd prefer that it just return the empty string whenever the length is <= 0. P5's weird "nonnegative means length, negative means offset" behavior is just way too counterintuitive IMO. -- Mark J. Reed <[EMAIL PROTECTED]>
