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Re^3: How to call a sub-routine ref

by blue_cowdawg (Monsignor)
on Oct 22, 2012 at 12:47 UTC ( #1000324=note: print w/ replies, xml ) Need Help??


in reply to Re^2: How to call a sub-routine ref
in thread How to call a sub-routine ref

Did you actually test that code?

$ cat greengaroo.pl use strict; my $ref = sub { print "Hello World!\n"; }; # Both are equivalent $ref->(); &{ref}(); # But which one is best? That is the question! $ perl greengaroo.pl Hello World! Undefined subroutine &main::ref called at greengaroo.pl line 9.

your second call fails.

If you fix this by rewriting it thusly:

&{$ref}();
there is still the open question of "which is better?" From a readability standpoint I'd vote for the latter rather than the former. Others may disagree but that is the essence of TIMTOWTDI. If you feel there may be a performance issue involved here have you tried profiling the code?


Peter L. Berghold -- Unix Professional
Peter -at- Berghold -dot- Net; AOL IM redcowdawg Yahoo IM: blue_cowdawg


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Re^4: How to call a sub-routine ref
by greengaroo (Hermit) on Oct 22, 2012 at 14:27 UTC

    You are right! I forgot a $... sorry about that! Thanks for pointing it!

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