Home » Archived » M2M (model-to-model transformation) » [ATL] Iterating over collections
| [ATL] Iterating over collections [message #730603] |
Wed, 28 September 2011 17:06  |
 nicgue
Messages: 2
Registered: September 2011 |
Junior Member |
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Hi,
i got two sequences: a = Sequence {0,2,3,6}, b = Sequence {2,1,2,1}.
Now i want to create the following string: '(0,2)(2,1)(3,2)(6,1)', similar to the zip function in functional programming. I tried lots of approaches, which didn't work. So, how is this possible without the possibility to iterate over multiple sequences with an iteration counter?
Thank you,
nicgue
[Updated on: Wed, 28 September 2011 17:06] Report message to a moderator |
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| Re: [ATL] Iterating over collections [message #730651 is a reply to message #730619] |
Wed, 28 September 2011 19:05  |
Ed Willink
Messages: 7655
Registered: July 2009 |
Senior Member |
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Hi
Or you can create one
let a : Sequence(Integer) = Sequence{0,2,3,6} in
let b : Sequence(Integer) = Sequence{2,1,2,1} in
Sequence{1..a->size()}->collectNested(e : Integer |
Sequence{a->at(e),b->at(e)})
Regards
Ed Willink
On 28/09/2011 18:54, Sylvain EVEILLARD wrote:
> You do have an iteration counter : the size of the result.
> let a : OclAny = Sequence{0,2,3,6} in
> let b : OclAny = Sequence{2,1,2,1} in
> a->iterate(e; res : OclAny = Sequence{}|
> res.append(Sequence{e,b->at(res.size() + 1)})
> )
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