SPUG: Using last in non-loop blocks
Andrew Sweger
andrew at sweger.net
Thu Apr 22 18:37:53 CDT 2004
According to perldoc -f last (perl 5.8.3):
Note that a block by itself is semantically identical to a loop that
executes once. Thus "last" can be used to effect an early exit out of
such a block.
This led me to think that I could safely use 'last' in any block
structure, including an if block. E.g.,
if ($reasonably_true) {
#blah blah
last unless $denominator > 0;
#blah blah
}
I got slapped in the terminal with,
Can't "last" outside a loop block at /my/dumb/script.pl line 162.
Just thought that was interesting. I thought it should work (according to
the docs anyway).
--
Andrew B. Sweger -- The great thing about multitasking is that several
things can go wrong at once.
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