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} print "Inside the sub at line 34: |$result|\n"; return $result; ... my $ result = egal($param); # call the sub! print "At line 39 (after the sub), \$result is: |$result|\n";
... Use of uninitialized value in concatenation (.) or string at 848064_xy +z.pl line 22. ++++Inside the sub at line 34: |false| At line 39 (after the sub), $result is: |false|