From b2f73c40b8a995ed685fc76f2df724b15ead16b6 Mon Sep 17 00:00:00 2001 From: Francesco Rodriguez Date: Tue, 15 May 2012 10:00:09 -0500 Subject: Backporting some docs on core_ext/hash --- activesupport/lib/active_support/core_ext/hash/deep_dup.rb | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'activesupport/lib/active_support/core_ext/hash/deep_dup.rb') diff --git a/activesupport/lib/active_support/core_ext/hash/deep_dup.rb b/activesupport/lib/active_support/core_ext/hash/deep_dup.rb index 447142605c..c668678ce2 100644 --- a/activesupport/lib/active_support/core_ext/hash/deep_dup.rb +++ b/activesupport/lib/active_support/core_ext/hash/deep_dup.rb @@ -1,5 +1,12 @@ class Hash # Returns a deep copy of hash. + # + # hash = { :a => { :b => 'b' } } + # dup = hash.deep_dup + # dup[:a][:c] = 'c' + # + # hash[:a][:c] #=> nil + # dup[:a][:c] #=> "c" def deep_dup duplicate = self.dup duplicate.each_pair do |k,v| -- cgit v1.2.3