[REBOL] Re: Passing hash keys to functions
From: premshree:pillai:gma:il at: 29-Dec-2004 3:18
On Tue, 28 Dec 2004 16:16:14 EST, [SunandaDH--aol--com] <[SunandaDH--aol--com]> wrote:
> Premshree:
>
> > I'm trying to write a function that accepts a key as an argument, and
> > then returns the corresponding value.
>
> You might be better off with the keys as strings rather than words:
>
> hsh: make hash! ["a" [1 2] "b" [3 4]]
>
> The code hardly needs a function:
>
> select hsh "b"
> == [3 4]
Ah, I din't know of the existence of a select. :-|
I'm a bit confused as to how to use it for keys that have values as
hashes, though. If I have something like:
hsh: make hash! ["a" [1 2] "b" [3 4]]
How do I do something like hsh->"a"->1?
TIA
> But if you want one:
>
> get-val: func [of [hash!] key [string!]
> ][
> return select of key
> ]
>
> get-val hsh "b"
> == [3 4]
>
> Sunanda
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--
Premshree Pillai
http://www.livejournal.com/~premshree
