From 38896af4281d2e191cbde15836a23e4c0274fff6 Mon Sep 17 00:00:00 2001
From: Joris
Date: Sat, 4 Jun 2016 11:02:43 +0200
Subject: Add mean payment by month

---
 src/client/elm/Utils/List.elm | 4 ++++
 1 file changed, 4 insertions(+)

(limited to 'src/client/elm/Utils')

diff --git a/src/client/elm/Utils/List.elm b/src/client/elm/Utils/List.elm
index 4886418..cc57d9f 100644
--- a/src/client/elm/Utils/List.elm
+++ b/src/client/elm/Utils/List.elm
@@ -1,5 +1,6 @@
 module Utils.List exposing
   ( groupBy
+  , mean
   )
 
 import Dict
@@ -11,3 +12,6 @@ groupBy f xs =
         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)
-- 
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