Unfortunately, any subroutine that you define like that will be put into the namespace of the package that it's resident in. Thus, you cannot have lexically scoped subroutines. From what I understand, we will have lexically scoped subs in Perl6.

What you want is a closure:

my $bar = sub { print shift };
sub foo {
    print "Hello\n";
    $bar->( "Saluton mondo!\n" );
}
foo();
$bar->( "Hello world!\n" );

[download]

Hmm... as I recall, the proper definition of a closure is an anonymous code reference that contains a reference to a lexically scoped variable that is defined outside of itself. Since this example doesn't really do that, is it, strictly speaking, a closure?

Cheers,
Ovid

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In reply to (Ovid) Re: Sub Definitions Within Subs: Best Way to Exploit by Ovid
in thread Sub Definitions Within Subs: Best Way to Exploit by crazysniffable

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