Hi Tim,
TJ> I've tried using this, but am unsure how. Can you give some
TJ> examples?
>> b: [1 2 3 4 5 6 7 8 9 10]
== [1 2 3 4 5 6 7 8 9 10]
>> collect n [foreach [x y] b [n add x y]]
== [3 7 11 15 19]
COLLECT returns a block. The word you give it is the "collector
function"; wherever that word appears in the block, a value will be
collected.
It's main goal is to eliminate tedious code. e.g.
fn: func [/local res] [
res: copy []
foreach ... [append res value]
res
]
becomes:
fn: does [collect [foreach val ... [val value]]
Does that make sense?
-- Gregg
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