Re: [stack] Re: Concatenative Hardware

On Nov 4, 2007, at 19:25 , Christopher Diggins wrote:

>>> QTE and COMP allows you to treat function like stacks, by adding  
>>> data
>>> to them, which you can accesss later by calling CALL. So
>>> computationally it is a multi-stack machine.
>>
>> Could you describe their behaviour a bit more?
>
> I'll be providing some C code shortly, but here is the brief  
> description.
>
> QTE creates a thunk (a nullary function) from a value. The value is
> popped from the stack and replaced with a function that always returns
> the value.

Enlightenment time...

I understand the form of this construct but not its essential nature.
How does it differ from, and in what way is it more useful than, a
constant?

-- Don



> COMP composes two function pointers to create a new function that
> executes the first function then the second function.
>
> - Christopher
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