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Re: a sub within a sub -- revisiting

by Anonymous Monk
on Apr 10, 2010 at 04:14 UTC ( #833943=note: print w/replies, xml ) Need Help??


in reply to a sub within a sub -- revisiting

bar is still visible outside of foo, so make it lexical
sub foo { my $bar = sub { my ($i) = @_; push @arrb, $arra[$i]; }; $bar->($#arra); ... }

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Re^2: a sub within a sub -- revisiting
by ikegami (Pope) on Apr 11, 2010 at 06:21 UTC

    Note that the above leaks if the anon sub accesses $bar. That would be the case if the anon sub is recursive, for example. I find the following simpler, and it doesn't leak.

    sub foo { ... local *bar = sub { ... }; bar(...); }

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[moritz]: oh, the question was about creation, not indexing
[thepkd]: temporary variables
[moritz]: [ { a => [ { b => 1 } ] } ]
[choroba]: dereference ne creation
[choroba]: at least in my lingo
[moritz]: .oO( oh temps, oh moritz )
[GotToBTru]: you are correct, choroba, but of course there is no point in doing one without the other
[GotToBTru]: un less you're working on write-only memory
[1nickt]: my $x = $aohoaoh->[0]->{' foo'}->[0]->{'bar' }; should work
[thepkd]: not indexing

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