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One kind of "can't happen" looks like this:
if ( $mnt eq 'Jan'){ $mt = 1 }
elsif ( $mnt eq 'Feb'){$mt = 2 }
...
elsif ( $mnt eq 'Dec'){$mt = 12 }
Where's the else clause?
"Oh, that can't happen"
... unless the input data is malformed
... and we all know that program input data is never malformed
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Copyright © 2006 M. J. Dominus |