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Anonymous's avatar
Anonymous
Not applicable
6 years ago
Solved

List.Unzip wanted

let suppose we have two lists for which I want to keep the correspondence in the order of the elements. So if I change the order of the first one of the lists, the elements of the second list also a...
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  • Mariusz's avatar
    Mariusz
    6 years ago

    Hi Anonymous 

     

    You can zip it again, this will reverse the zip, or am I missing something?

    = List.Zip( List.Zip( { { 1, 2 }, { 3, 4 }, { 5, 6 } } ) )

     

    Best Regards,
    Mariusz

    If this post helps, then please consider Accepting it as the solution.

    Please feel free to connect with me.
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Smauro's avatar
Smauro
Solution Sage
6 years ago

Hey Anonymous ,

I came up with this:

 

(ListGiven as list) as list =>
    let
        n = List.Count(ListGiven{0}),
        Acc =
            (ListGiven, k, n) =>
                let
                    ListK =
                        if k < n then
                            List.Transform(ListGiven, each _{k})
                        else
                            {},
                    NewList =
                        if k < n then
                            ListK & @Acc(ListGiven, k + 1, n)
                        else
                            ListK
                in
                    NewList,
        UnZipped = Acc(ListGiven, 0, n)
    in
        UnZipped

 

Mariusz' answer is better and certainly easier. What I came up with just gives one list.