Re^2: Style and warnings

There are perfectly valid numbers that Perl can deal with, even without warnings, which still contain non-digit characters. 1.3 comes to mind. And so do -5 and 3e5.

Furthermore, there are strings containing no \D characters, but which Perl cannot treat as numbers. "๑๒๓" for instance.

If you wish to find out whether a string looks like a number, use Scalar::Util::looks_like_number. Don't use simplistic regexes.

Comment on Re^2: Style and warnings Select or Download Code

Replies are listed 'Best First'.
Re^3: Style and warnings by BioLion (Curate) on Aug 18, 2009 at 17:40 UTC
Just making an example. OP would have to make specific checks based on their input. You never know, maybe they are only dealing with integers, possibly joined with types of dog, in which case my example was perfect. Just a something something...	[reply]
Re^4: Style and warnings by JavaFan (Canon) on Aug 18, 2009 at 20:48 UTC
You never know, maybe they are only dealing with integers, possibly joined with types of dog, in which case my example was perfect. Hmmm. Well, in that case, suppose the OP was dealing with a $seqnum equal to -9999997, in which case `my $bigseqnum = 3;` [download] would have been perfect! You never know!	[reply] [d/l]
Re^5: Style and warnings by BioLion (Curate) on Aug 19, 2009 at 07:33 UTC
The key point was *just an example. i.e. Trying to make a point, rather than cover every base. Your points would be important checks to incorporate though, and OP should bear them in mind! Just a something something...*	[reply]