diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/hash/deep_dup.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/hash/deep_dup.rb | 7 |
1 files changed, 7 insertions, 0 deletions
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| |