Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer

Re: Reg Ex exercise

by toolic (Bishop)
on Dec 05, 2012 at 16:44 UTC ( #1007330=note: print w/ replies, xml ) Need Help??

in reply to Reg Ex exercise

From Scalar::Util::looks_like_number

perldoc -m Scalar::Util::PP sub looks_like_number { local $_ = shift; # checks from perlfaq4 return 0 if !defined($_); if (ref($_)) { require overload; return overload::Overloaded($_) ? defined(0 + $_) : 0; } return 1 if (/^[+-]?[0-9]+$/); # is a +/- integer return 1 if (/^([+-]?)(?=[0-9]|\.[0-9])[0-9]*(\.[0-9]*)?([Ee]([+-]?[ +0-9]+))?$/); # a C float return 1 if ($] >= 5.008 and /^(Inf(inity)?|NaN)$/i) or ($] >= 5.006 +001 and /^Inf$/i); 0; }

Comment on Re: Reg Ex exercise
Select or Download Code

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1007330]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (6)
As of 2016-02-07 18:30 GMT
Find Nodes?
    Voting Booth?

    How many photographs, souvenirs, artworks, trophies or other decorative objects are displayed in your home?

    Results (257 votes), past polls