Front page | perl.perl5.porters |
Postings from July 2009
Zefram wrote:
> ~ is documented to operate on integers or bit strings, but "\x{aaa}"
> is neither. Empirically, if ~ is applied to a string containing at least
> one non-octet, the result is a string of the same length, where each
> codepoint is equal to 0xffffffff minus an input codepoint. That could
> conceivably be a useful operation, if it could be consistently applied
> to all strings, but if all input codepoints are 0xff or below then ~
> negates octets rather than 32-bit codepoints. ~~$_ eq $_ is broken for
> values such as "\x{ffffffaa}".
Not a bug.
The existing behavior was Jarkko's call during 5.7.x development, though it
seems to have escaped being documented.
See http://www.nntp.perl.org/group/perl.perl5.porters/2000/11/msg25864.html
Thread Next