Incidentally, this mechanism is a really neat way to create a recursive subroutine. BrowserUk, AFAIK, was the first to post it on PerlMonks. (I'm just too lazy to link to the post.) Using Fibonacci numbers as the example: 
sub fibonacci
{
    my $_fibo;
    $_fibo = sub {
        my $v = shift; 
        $v > 1 ? $_fibo->($v - 1) + $_fibo->($v - 2) : 1;
    };

    $_fibo->( @_ );
}

[download]

I personally write all my recursive code like this.

------
We are the carpenters and bricklayers of the Information Age.

Then there are Damian modules.... *sigh* ... that's not about being less-lazy -- that's about being on some really good drugs -- you know, there is no spoon. - flyingmoose

I shouldn't have to say this, but any code, unless otherwise stated, is untested

In reply to Re: Is it possible to create a sub exclusive to a sub? by dragonchild
in thread Is it possible to create a sub exclusive to a sub? by punkish

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