Scope of variables in a function

[James Laver]

On 2 Jun 2013, at 12:42, Dave Mitchell <davem at iabyn.com> wrote:

> I'm not aware of any particular performance penalty:
> 
>    $ time perl5180o -E'for (1..100_000_000) { my $x = 1 }' 
> 
>    real	0m5.638s
> 
>    $ time perl5180o -E'for (1..100_000_000) { my $x }'
> 
>    real	0m4.012s
> 
>    $ time perl5180o -E'for (1..100_000_000) { state $x = 1 }'
> 
>    real	0m3.060s
> 
>    $ time perl5180o -E'my $x; for (1..100_000_000) { $x }'
> 
>    real	0m2.787s
> 
> Yes technically its slightly slower than a bare '$x', but it's a lot
> faster than a bare 'my $x';

I stand corrected. I thought I'd seen a warning in the docs at some point but evidently I'm making it up.

/j