On 5 October 2012 18:09, Adrian Howard <[email protected]> wrote:
> On 5 October 2012 10:35, Victor Churchill <[email protected]> > wrote: > [snip] > > ( for comparison Perl can be a minefield, where any of the null string > '', > > the integer 0, and an undefined value undef are all false.) > > It hardly ever causes problems in Perl land though since all the > 'false' values correspond to 'empty' in one way or another (empty > string, zero number, zero length array, empty hash, etc.) Once you're > used to the convention it reads quite naturally IMHO. > It has bitten me a couple of times where I specifically wanted to take defensive action on undef, and saying C< unless $foo > fell over when $foo was defined but happened to be zero - a learning experience :) > > Adrian > -- > http://quietstars.com [email protected] twitter.com/adrianh > t. +44 (0)7752 419080 skype adrianjohnhoward del.icio.us/adrianh > > -- > Next meeting: ???, ???day, 2012-11-?? 20:00 > Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ > New thread on mailing list: mailto:[email protected] > How to Report Bugs Effectively: http://goo.gl/4Xue > -- best regards, Victor Churchill, Bournemouth -- Next meeting: ???, ???day, 2012-11-?? 20:00 Meets, Mailing list, IRC, LinkedIn, ... http://dorset.lug.org.uk/ New thread on mailing list: mailto:[email protected] How to Report Bugs Effectively: http://goo.gl/4Xue
