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laptop:~> perl -wle 'print "TrUe" if undef == 0' Use of uninitialized value in numeric eq (==) at -e line 1. TrUe
laptop:~> perl -le 'print "TrUe" if "foo" == 0' TrUe laptop:~> perl -le 'print "TrUe" if "foo"' TrUe
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