On Jul 13, John W. Krahn said:
>Jeff 'Japhy' Pinyan wrote:
>>
>> On Jul 13, David Storrs said:
>>
>> >Given this code:
>> >
>> > my $TOKEN_DELIMS = qr/[^\w\-'\$]/;
>> > my $text = # string containing the contents of an mbox file
>> >
>> > my @tokens = split /$TOKEN_DELIMS/o, $text;
>> >
>> >I end up with a large number of null strings ('') in @tokens. After
>> >RTFMing on split, I assume this is because I am matching at the
>> >beginning/end of the string. I can't quite grok how to eliminate
>> >these, however.
>>
>> Well, your split pattern is only matching ONE token delimiter at a time.
>> That means on a string like "[EMAIL PROTECTED]", you're going to get back the
>> elements "this", "", "", "that", because there's an empty string in
>> between the ! and @, as well as between the @ and #. I think you want to
>> change your regex to /$TOKEN_DELIMS+/o instead.
>
>And you are not going to need the /o option as qr// compiles the regular
>expression.
The /o is modifying the split() operator. It's perfectly fine to put it
there. The increase will be EXCEPTIONALLY minor, but it's still ok.
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]
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