On 28 Jan 2009, at 12:26, Jonathan Stowe wrote:
2009/1/28 Mark Blackman <m...@blackmans.org>:
On 28 Jan 2009, at 12:01, Paul Makepeace wrote:
Can you give an example where perl is doing something surprising
to you?
perl -le 'print "yes" if "a" == "b"'
Is the kind of case I suspect he's hit.
I guess that "non-number used in a numeric or arithmetic context is
treated as 0" isn't at all obvious to the beginner. We tend to think
that DWIM is one of the strengths of Perl, but someone not coming from
a Perl background is likely to have a totally different value of
"WIM" than that catered for by Perl :-)
Indeed, although the point is made pretty early on in 'man perldata'
under 'Scalar Values' and is inherited from 'awk' apparently.
I certainly read and re-read both perldata and perlsyn quite a lot
when I started using Perl.
- Mark
