Re: Re: swapping vars, two ways, 2 results...

[Sihal]

but why is it that much faster ?

[BrowserUk]

This ($a,$b) = ($b,$a); is notionally equivalent to

{
    local @list;
    $list[0]=$b;
    $list[1]=$a;
    $a=$list[0];
    $b=$list[1];
    undef @list;
}

Instead of allocating one temprary scalar and doing 3 assignments, it is allocating a temporary list, performing 4 assignments and deallocating the list.

---

Examine what is said, not who speaks.