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author | Joris | 2020-01-30 11:35:31 +0000 |
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committer | Joris | 2020-01-30 11:35:31 +0000 |
commit | 960fa7cb7ae4c57d01306f78cd349f3a8337d0ab (patch) | |
tree | 5077cc720525fb025e4dba65a9a8b631862cbcc8 /src/client/Utils/List.elm | |
parent | 14bdbc8c937f5d0b35c61350dba28cb41c3737cd (diff) | |
parent | 6a04e640955051616c3ad0874605830c448f2d75 (diff) | |
download | budget-960fa7cb7ae4c57d01306f78cd349f3a8337d0ab.tar.gz budget-960fa7cb7ae4c57d01306f78cd349f3a8337d0ab.tar.bz2 budget-960fa7cb7ae4c57d01306f78cd349f3a8337d0ab.zip |
Merge branch 'with-ghcjs' into 'master'
Use Haskell on the frontend
See merge request guyonvarch/shared-cost!2
Diffstat (limited to 'src/client/Utils/List.elm')
-rw-r--r-- | src/client/Utils/List.elm | 36 |
1 files changed, 0 insertions, 36 deletions
diff --git a/src/client/Utils/List.elm b/src/client/Utils/List.elm deleted file mode 100644 index 8e26e85..0000000 --- a/src/client/Utils/List.elm +++ /dev/null @@ -1,36 +0,0 @@ -module Utils.List exposing - ( groupBy - , mean - , links - ) - -import Dict -import Maybe.Extra as Maybe - -groupBy : (a -> comparable) -> List a -> List (comparable, List a) -groupBy f xs = - let addItem item dict = - let groupItems = Dict.get (f item) dict |> Maybe.withDefault [] - in Dict.insert (f item) (item :: groupItems) dict - in List.foldr addItem Dict.empty xs - |> Dict.toList - -mean : List Int -> Int -mean xs = (List.sum xs) // (List.length xs) - -links : List a -> List (a, a) -links xs = - let reversed = List.reverse xs - in List.foldr - (\x acc -> - case Maybe.map Tuple.first (List.head acc) of - Just y -> - (x, y) :: acc - _ -> - acc - ) - (case reversed of - x :: y :: _ -> [(y, x)] - _ -> [] - ) - (List.reverse << List.drop 2 <| reversed) |