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Re: Wild card in regular expression

by toolic (Bishop)
on Nov 28, 2012 at 21:14 UTC ( #1006103=note: print w/replies, xml ) Need Help??

in reply to Wild card in regular expression

Tip #9 from the Basic debugging checklist : YAPE::Regex::Explain

The regular expression: (?-imsx:(ther*)) matches as follows: NODE EXPLANATION ---------------------------------------------------------------------- (?-imsx: group, but do not capture (case-sensitive) (with ^ and $ matching normally) (with . not matching \n) (matching whitespace and # normally): ---------------------------------------------------------------------- ( group and capture to \1: ---------------------------------------------------------------------- the 'the' ---------------------------------------------------------------------- r* 'r' (0 or more times (matching the most amount possible)) ---------------------------------------------------------------------- ) end of \1 ---------------------------------------------------------------------- ) end of grouping ----------------------------------------------------------------------

Use . instead. Also, with different delimiters, you can clean up the replacement string:

use warnings; use strict; my $test = "Here is the there"; $test =~ s{(ther.)}{<test>$1</test>}ig; print "$test\n"; __END__ Here is the <test>there</test>

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[PriNet]: quick question... anyone know how to remove all the existing keys in a %hash ? i've tried several options, but when i re-use the hash, some of the "upper" keys that i don't re-use stick and i can't get them to "remove"

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