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You say you get a new instance of $list_ref every time the function is called because my is not merely a declaration like in C. Yet you would get a new instance of local variables every time a function is called in C as well! Consider a re-entrant function, for example.

In fact, as an optimization in Perl, you *don't* get a new instance of my variable every pass unless you do something that forces Perl to create a new variable. That's an implementation detail you shouldn't worry about, though.

As for your suggestion to move my $list_ref, it seems to miss the point that nesting *named* functions has no benefit in Perl. Instead of trying to make the nested named function work, one should look at what one wants to achieve by nesting a named function and look for ways to meet that goal. (local *name = sub { ... }; is the likely answer.)


In reply to Re^3: sub scope question by ikegami
in thread sub scope question by perl45036

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