Hi Ryan
Here is a short answer, others may wish to expand. When issued in the global
context, both methods give the same results. But within the block defining
an object, they do not:
>> ob: make object! [ f1: func [x][x * x] set 'f2 func [x][x + x]]
>> probe ob
make object! [
f1: func [x][x * x]
]
; notice that only f1 is defined within the object, f2 is global
>> f2 4
== 8
>> ob/f1 4
== 16
>>
Using a setword causes the function to be defined within the object. Using
the 'set function does not, instead, the word naming the function will be
defined in the first ancestor context where it has already been defined, or
if the word is previously undefined, in the global context.
This behavior of 'set is actually very useful for exporting functions from
objects, while in the func definition all of the object vars are available
to it.
HTH
-Larry
----- Original Message -----
From: <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>
Sent: Thursday, March 15, 2001 2:49 PM
Subject: [REBOL] set
> Reading the REBOL/Core manual, I am still uncertain as to what 'set
> accomplishes. I noticed these two functions in a recent post, one using
> 'set and the other not using 'set. What does 'set accomplish?
>
> exec: func [series [series!]] [
> if error? try [return do series] [
> join exec_start [series exec_end]]]
>
> set 'stringcompose func [
> {Evaluates a string of expressions, only evaluating
> executable parens, and returns a block.}
> Text [String!]] [
> clear buffer
> parse/all Text rule
> buffer]
>
> Ryan C. Christiansen
> Web Developer
>
> Intellisol International
> 4733 Amber Valley Parkway
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>
> Global Leader in People Performance Software
>
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