[self-interest] Re: blocks

Steve Dekorte steve at dekorte.com
Fri Nov 21 13:25:20 UTC 2003

On Nov 21, 2003, at 4:41 AM, Pablo de Marcos wrote:
> Steve, sorry but in the example [  add = method(n, block(x, x + n))  ] 
> i
> don't understand ...
> Where does x live?

It is an argument off the block.

> If I invoke
>     a = add(10)
> then it signified to execute a method with 1 argument (n) whose
> functionality is to process x+n, but where is x?

No, it's functionality it to return the block "block(x, x + n)". This 
is then assigned to the value a. When we call:


it activates the block with the argument 10 which is what x is set to. 
the block finds n in it's enclosing context which is the locals that 
where created when the add method was called.

-- Steve

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