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Postings from July 2010
(Ben Morrow) wrote:
> Quoth jand@activestate.com ("Jan Dubois"):
> > On Wed, 28 Jul 2010, Zefram wrote:
> > > Jan Dubois wrote:
> > > >Well, you _could_ add a special case to the string comparison:
> > >
> > > That would be a mess. The better solution is for negative zero to
> > > stringify as "0".
>
> But that makes number->string->number round-tripping unreliable, which
> was the whole reason for stringifying as "-0" in the first place. Lots
> of code assumes that stringification preserves information.
Except that "-0" doesn't numify to negative zero.
"-0.0" and "-0." do (on darwin-ppc, at least).
{
print "'$_'\t=> ",$_/1,"\n" foreach qw( -0.0 -0. -0 );
}
/Bo Lindbergh
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