Beefy Boxes and Bandwidth Generously Provided by pair Networks
laziness, impatience, and hubris
 
PerlMonks  

•Re: Re: Re: Is it a number?

by merlyn (Sage)
on Oct 23, 2003 at 14:50 UTC ( #301599=note: print w/ replies, xml ) Need Help??


in reply to Re: Re: Is it a number?
in thread Does it look like a number?

Yeah, the difference is the difference between "could this string be converted into a number without getting the warnings if -w is on?" vs "is this value always and only a number?". Everything in the latter case is also true for the former, but the inverse is not true. For example, all external data read from filehandles is always a string initially, so it could never pass this "is_numeric" test.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

Comment on •Re: Re: Re: Is it a number?

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://301599]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others rifling through the Monastery: (5)
As of 2016-04-29 03:14 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    :nehw tseb si esrever ni gnitirW







    Results (438 votes). Check out past polls.