Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

Re^2: A function to determine if a string is numeric

by jwkrahn (Monsignor)
on Feb 24, 2012 at 03:39 UTC ( #955861=note: print w/replies, xml ) Need Help??


in reply to Re: A function to determine if a string is numeric
in thread A function to determine if a string is numeric

$ perl -E' print "Enter a number or string: "; my $s = <STDIN>; chomp $s; if ( $s =~ /^[0-9,.E]+$/ ) { say "$s is a number\n"; } else { say "$s may be a string\n"; } ' Enter a number or string: ,,, ,,, is a number $ perl -E' print "Enter a number or string: "; my $s = <STDIN>; chomp $s; if ( $s =~ /^[0-9,.E]+$/ ) { say "$s is a number\n"; } else { say "$s may be a string\n"; } ' Enter a number or string: EEE EEE is a number $ perl -E' print "Enter a number or string: "; my $s = <STDIN>; chomp $s; if ( $s =~ /^[0-9,.E]+$/ ) { say "$s is a number\n"; } else { say "$s may be a string\n"; } ' Enter a number or string: -777 -777 may be a string

If you are going to use a regular expression then you should probably read the FAQ: How do I determine whether a scalar is a number/whole/integer/float?

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://955861]
help
Chatterbox?
[Corion]: Discipulus: If you want to rewrite the SVG, then yes, something like XML::Twig should be enough. I would try to not modify the SVG but only modify the display, but so far I haven't convinced IE to change the style...
Corion gives up
[Discipulus]: ah! so you mean if i need a static image i can use Twig, if on the fly better css selector and mody attrs (jquery?), rigth?
[LanX]: not sure what you guys are taking about, but a DOM manipulation in JS shouldn't be difficult
[Corion]: Discipulus: Yeah, that's what I would try (but so far, I can't even change the colors manually in the SVG, which is why I gave up ;) )
Discipulus bad sign..
[Discipulus]: italian doc says to modify somehow the initial SVG before using it with D3.js
[Discipulus]: LanX the fact is that my js ability is even poorer than my Perl one..
[LanX]: oh its negative? ;P

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (13)
As of 2017-03-23 09:45 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Should Pluto Get Its Planethood Back?



    Results (285 votes). Check out past polls.