http://www.perlmonks.org?node_id=182493


in reply to Re: Seeking a good punchline
in thread Seeking a good punchline

No, but I'll give you $1

Surely if there was no match, $1 will be undef :-)

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Re: Re: Re: Seeking a good punchline
by cacharbe (Curate) on Jul 17, 2002 at 18:27 UTC
    True, but in today's volatile economy, what really is the value of $1?

    C-.

    ---
    Flex the Geek

Re^3: Seeking a good punchline
by JavaFan (Canon) on Nov 29, 2010 at 23:11 UTC
    If there was no match, $1 will be whatever if was before. Which actually *may* be defined:
    $ perl -wE '"foo" =~ /(.)/; "bar" =~ /f(o)o/ or say $1' f