[REBOL] Re: Is Rebol dynamic?
From: lmecir:mbox:vol:cz at: 28-Nov-2002 15:46
Hi Romano,
----- Original Message -----
From: "Romano Paolo Tenca"
> I remember Holger saying that a rebol block must not be changed during
> execution.
>
> I think that it is safe to change 1 or more elements of block during
> execution, but not to insert/remove any item.
>
> Can changing (not inserting) be a safe programming style for future
releases?
> ---
> Ciao
> Romano
Holger's advice is OK. Can we change the elements of an executed block? This
seems to work "expectedly":
>> a: func [x] [type? get/any 'x]
>> b: func [x] [type? get/any 'x]
>> block: [a (block/1: 'b 12)]
== [a (block/1: 'b 12)]
>> do block
== integer!
How about this?
>> block: [a: (block/1: first [b:] 12)]
== [a: (block/1: first [b:] 12)]
>> do block
== 12
>> b
== 12
Ciao
-L
