'load may be what you are looking for
foo: ["09:33" "12.30" "1 270"]
== ["09:33" "12.30" "1 270"]
>> foreach f foo[append bar load trim/all f]
== [9:33 12.3 1270]
>> foreach b bar[ print type? b]
time
decimal
integer
On Mon, 23 Sep 2002, Laurent Giroud wrote:
> Hello everyone,
>
> I am still a beginner and would like to have some experts comments on Rebol code
> I managed to write recently. This is a very simple example but since all the
> reflexions on the list are always very insightful (at least to me !) I thought
> it could be a good thing to have my code criticized by people who know what
> they are talking about ;)
>
> What I am doing is very simple, I get string data and store it this way :
>
> trans: [
> ["09:33" "12.30" "1 270"] ; [string! string! string!]
> ["09:34" "12.31" "4 450"]
> ...
> ]
>
> and need to convert it (for faster manipulation later on) into :
> [
> [9:33 12.30 1270] ; [time! decimal! integer!]
> [9:34 12.31 4450]
> ...
> ]
>
> My original conversion code was :
> foreach t trans [
> [change trans reduce
> to-time first trans
> to-decimal second trans
> to-integer trim/all third trans
> ]
> ]
>
> not very elegant but works fine ;)
>
> However, I thought that it would be more flexible to act as if I did not know in
> advance what the type of elements was.
> Since Rebol is already capable to guess the correct type for data it
> encounters within scripts or the console I thought that it was possible to find
> a way to have Rebol guess the correct type by itself.
>
> I went into much trouble to write a working solution but finally got this code
> to do the job :
> (beware line cuts)
>
> foreach t trans [
> for i 1 length? t 1 [
> do rejoin ["t/" i ": to-" type? do trim/all t/:i " " t/:i]
> ]
> ]
>
> it uses the 'do function to have rebol guess the correct type ("do t/:i") from
> the string then builds the code to convert the current element to its new value
> and executes this code using 'do again.
>
> This is very short but it took me almost three hours to write this :(
>
> I still struggle a lot to write code like this which executes statements
> it has itself generated and there seems to be so many ways to do the same thing
> in Rebol that I am never quite sure that I found a good one ;)
> So all comments will be more than welcome !
>
> Best regards,
> Laurent
>
> --
> Laurent Giroud
> [EMAIL PROTECTED]
>
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