The "inner" sub is actually visible to everyone. 

$ perl -wE'sub o { sub i { say "foo"; } } i();'
foo

[download]

The "inner" sub cannot use variables from the "outer" sub. 

$ perl -wE'sub o { my ($x) = @_; sub i { say $x; } i(); } o("abc"); o(
+"def");'
Variable "$x" will not stay shared at -e line 1.
abc
abc

[download]

I tend to call what you have a bug, not a technique.

In reply to Re: Inner subroutines? by ikegami
in thread Inner subroutines? by wsppan

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