From 53cd77513fb6a7ebaec0a27f631557f9e0fa98eb Mon Sep 17 00:00:00 2001
From: Andrey Antukh <niwi@niwi.be>
Date: Wed, 25 Jun 2014 12:12:12 +0200
Subject: [PATCH] Add group by helper.

---
 app/coffee/utils.coffee | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/app/coffee/utils.coffee b/app/coffee/utils.coffee
index 5d457bce..4b7fe2bf 100644
--- a/app/coffee/utils.coffee
+++ b/app/coffee/utils.coffee
@@ -50,8 +50,16 @@ toggleText = (element, texts) ->
     element.data('nextTextPosition', nextTextPosition + 1)
     element.text(text)
 
+groupBy = (coll, pred) ->
+    result = {}
+    for item in coll
+        result[pred(item)] = item
+
+    return result
+
 taiga = @.taiga
 taiga.bindOnce = bindOnce
 taiga.mixOf = mixOf
 taiga.trim = trim
 taiga.toggleText = toggleText
+taiga.groupBy = groupBy