[REBOL] Re: Improvements anyone?

From: moliad:g:mail at: 30-Nov-2007 0:04

hi kai

you might want to copy the block and use remove-each, its a very fast
iterator, and expressly built for filtering.

remove-each 'item copy ["a" 1 2 4 "f"] [integer? item]

 == ["a" "f"]

using any or all in the evaluated block, is a very dense way to do
multi-rule filtering

 remove-each 'item copy ["a" 1 2 4 "f"] [
    any [
        all [integer? item item > 3]
        all [string? item find item "a"]
    ]
]

== [1 2 "f"]

also, just adding a 'NOT in front of the 'ANY, reverses the filter, which is
handy if you want to split the same incongruous data set into two pieces.

-MAx

On Nov 29, 2007 11:14 PM, Kai Peters <kpeters-otaksoft.com> wrote:

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