From c7cff199dc14a7fb7a43910f885ca7fa9b2ccdfd Mon Sep 17 00:00:00 2001 From: "Yukihiro \"Matz\" Matsumoto" Date: Thu, 16 Jan 2014 21:33:48 +0900 Subject: hash value of enumerable should be obtained from its elements; close #1658 --- mrblib/enum.rb | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'mrblib/enum.rb') diff --git a/mrblib/enum.rb b/mrblib/enum.rb index 0593e1f04..e6aa682dd 100644 --- a/mrblib/enum.rb +++ b/mrblib/enum.rb @@ -395,4 +395,13 @@ module Enumerable # # ISO 15.3.2.2.20 alias to_a entries + + # redefine #hash 15.3.1.3.15 + def hash + h = 12347 + self.each do |e| + h ^= e.hash + end + h + end end -- cgit v1.2.3