[REBOL] Executable code blocks as arguments
From: tim::johnsons-web::com at: 22-Aug-2001 9:56
Hello All:
Is it possible to pass a code block to a function member of an object
which would perform adhoc operations on object members?
Below is an example which I have set up:
REBOL []
o: make object![
a: 1 b: 2 c: 3
modify: func[arg[block!]][do arg]
]
print mold o
o/modify [a: "one" b: "two" c: "three"]
print mold o
; now the output below
make object! [
a: 1
b: 2
c: 3
modify: func [arg [block!]][do arg]
]
make object! [
a: 1
b: 2
c: 3
modify: func [arg [block!]][do arg]
]
; as you can see, 'a, 'b, and 'c remain unmodified.
; The result that I would be looking for would be:
make object! [
a: "one"
b: "two"
c: "three"
modify: func [arg [block!]][do arg]
]
Can I do this at all? If so, thanks in advance for
advice and comments, and feel free to point me to
docs on this.
regards
Tim
