in reply to Match 2 same characters

Sorry for the typo. I was trying: if ( $_ =~ /(.){1}

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Re^2: Match 2 same characters
by ikegami (Patriarch) on Mar 19, 2009 at 19:57 UTC
    {1} is a quantifier. It modifies what the preceding atom ((.) in this case) matches. This and other quantifiers are documented in perlre.
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