On Thu, Jul 31, 2008 at 3:54 PM, Ramon Leon
<ramon.leon@allresnet.com> wrote:
> askoh wrote:
> > | block |
> > block := [:i | Transcript cr; show: i].
> > 1 to: 10 do: [:i | block value: i+1]
> >
> > The above should print ten times. But it only prints the
> five even numbers.
> > That is a bug isn't it?
> >
> > Aik-Siong Koh
> >
> More of a "known limitation" than a bug... due to the fact
> that squeak
> does not have proper closures.
>
> try
>
> | block |
> block := [:j | Transcript cr; show: j].
> 1 to: 10 do: [:i | block value: i+1]
>
> Keith
than 1 to: 10 do:, seems related to #to:do: being inlined?
Yes. In the activation of to:do: there is a different counter. Look at the implementation of Number>>to:do:. So while both i's are still the same lvalue, i is not used by Number>>to:do: either to control the loop iterations or to to derive the values for the loop. Only when the loop is inlined does i become the loop control variable.
HTH