hey you name them, they are not anonymous! ; )

Not when its compiled, and that makes a difference. 

>perl -c -we"sub outer { my $x; sub inner { $x } inner() }"
Variable "$x" will not stay shared at -e line 1.
-e syntax OK

>perl -c -we"sub outer { my $x; local *inner = sub { $x }; inner() }"
-e syntax OK

[download]

And yeah, it's effectively a named sub thereafter. That's a bonus.

I'd rather prefer this construction

I usually use inner subs for recursive functions, and my would cause a memory leak there. It also needlessly complicates the calling syntax. 

sub outer {
  ...
  my $helper;
  $helper = sub {      # $helper references helper sub
     ...
     $helper->();      # helper sub references $helper
     ...
  };
  ...
}

[download]

Cyclic reference ⇒ memory leak.

In reply to Re^3: sub fuction inside sub functioin? by ikegami
in thread sub fuction inside sub functioin? by deewanagan

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