Re: Back & Forth - Co-routines

In article <73a87ff17586b02ae110516bfb76956e@www.novabbs.com>,
HenryHH <hohl@isartext.de> wrote:

On Tue, 4 Feb 2025 12:26:26 +0000, albert@spenarnc.xs4all.nl wrote:
>

... if they are absolutely necessary I use my enhanced `[ instead
of any style of locals
>
: root [ variable a variable b variable c ]
  c ! b ! a !
  \ now insert the famous quadratic root formula
  [ hide a hide b hide c ]  \ Prevent "not unique messages"
;

>
Hello Albert,
>
why is an enhanced [ necessary for this?
Couldn't you simply write:
>
variable a variable b variable c
>
: root ( a b c -- root)
 c ! b ! a !
\ now insert the famous quadratic root formula
;
>
hide a hide b hide c  \ Prevent "not unique messages"

You could, but now it doesn't look like a local variable,
isn't it?
You remark serves to show that local values (why do they call
them local variables) are largely superfluous.

P.S.
Maybe
[ variable a variable b variable c
  : D  b @ DUP * a @ b @ 4 * - ; ]
..
[ hide a .... hide D ]
..
is more convincing?

>
Henry

Groetjes Albert
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