Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options

Re: Split ( ) is Giving Me a Splitting Headache

by bpphillips (Friar)
on May 24, 2006 at 12:32 UTC ( #551342=note: print w/replies, xml ) Need Help??

in reply to Split ( ) is Giving Me a Splitting Headache

From the manual you evidentally didn't find (perldoc) :-)
perldoc -f split split /PATTERN/,EXPR,LIMIT split /PATTERN/,EXPR split /PATTERN/
In your case, you're only passing in a single argument to split. Perl interprets this as /PATTERN/ and implicitly uses $_ as the EXPR. Since $_ hasn't been initialzed yet (hence the warning) nothing really happens (it's trying to split an undefined value on occurences of "Hello World").

What you need to do (besides taking a look at the perldoc entry for split) is use the two-argument usage of split:
my $Phrase = "Hello World"; my @Parts = split(/ /, $Phrase); # split $Phrase on spaces

-- Brian

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://551342]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (5)
As of 2017-08-23 05:20 GMT
Find Nodes?
    Voting Booth?
    Who is your favorite scientist and why?

    Results (347 votes). Check out past polls.