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-rw-r--r--activesupport/lib/active_support/core_ext/array/deep_dup.rb6
1 files changed, 6 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/array/deep_dup.rb b/activesupport/lib/active_support/core_ext/array/deep_dup.rb
new file mode 100644
index 0000000000..82f9805236
--- /dev/null
+++ b/activesupport/lib/active_support/core_ext/array/deep_dup.rb
@@ -0,0 +1,6 @@
+class Array
+ # Returns a deep copy of array.
+ def deep_dup
+ map { |it| it.deep_dup }
+ end
+end