Sunday 18 August 2013

what does the word boundary's functionality in perl

what does the word boundary's functionality in perl

$string = "Aa Aa 122";
/\b[A-Z][a-z]*\b/
\b \b => does it search for duplicates of Aa Aa or it searches for that is
not in [] ?
and what does the followin regex do,
/(.).*\1/

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