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 | 11 |
1 files changed, 11 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 new file mode 100644 index 0000000000..447142605c --- /dev/null +++ b/activesupport/lib/active_support/core_ext/hash/deep_dup.rb @@ -0,0 +1,11 @@ +class Hash + # Returns a deep copy of hash. + def deep_dup + duplicate = self.dup + duplicate.each_pair do |k,v| + tv = duplicate[k] + duplicate[k] = tv.is_a?(Hash) && v.is_a?(Hash) ? tv.deep_dup : v + end + duplicate + end +end |