[REBOL] Re: collect-in
From: lmecir:mbox:vol:cz at: 12-Dec-2003 17:14
Romano Paolo Tenca napsal(a):
>This is my idea of collect:
>
>collect-in: func [
> {Append block evaluations to a series, use as body in For, Repeat, etc.}
> dest [block! hash! list! any-string!] "Series to append results"
> block [block!] "Block to evaluate."
> /only "Inserts into dest using the Only refinement."
> /local main
> ][
> change/only change change second main: func [res [any-type!]][
> none none none get/any 'res
> get/any 'res
> ] pick [insert insert/only] not only 'tail dest
> reduce [:main to-paren block]
>]
>
>;Usage:
>
>dest: make block! 100
>repeat n 10 collect-in dest [n * 100]
>
>The advantages:
> is trasparent for break
> works with empty block
> inside the body you know where values are stored
> is not slow
>
>I should like to submit it the view 1.3 project
>
>What do you think?
>
>---
>Ciao
>Romano
>
Does this behave well w.r.t. Return?
-L
