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Re^2: return !!

by ikegami (Patriarch)
on Mar 04, 2009 at 20:32 UTC ( #748312=note: print w/replies, xml ) Need Help??

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  1. or download this
    $ perl -wle'print 0 + sub { my @v; !!@v }->()'
    0
    ...
    $ perl -wle'print 0 + sub { my @v; @v ? 1 : "" }->()'
    Argument "" isn't numeric in addition (+) at -e line 1.
    0
    
  2. or download this
    $ perl -wle'print "" . sub { my @v; !!@v }->()'
    
    
    $ perl -wle'print "" . sub { my @v; @v ? 1 : 0 }->()'
    0
    

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