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adding examples to Hash#deep_merge method

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commit 873ac28660b6cec15064a4d321e121f68e54ee06 1 parent 88fc749
@frodsan frodsan authored
Showing with 7 additions and 2 deletions.
  1. +7 −2 activesupport/lib/active_support/core_ext/hash/deep_merge.rb
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9 activesupport/lib/active_support/core_ext/hash/deep_merge.rb
@@ -1,11 +1,16 @@
class Hash
# Returns a new hash with +self+ and +other_hash+ merged recursively.
+ #
+ # h1 = {x: {y: [4,5,6]}, z: [7,8,9]}
+ # h2 = {x: {y: [7,8,9]}, z: "xyz"}
+ #
+ # h1.deep_merge(h2) #=> {:x => {:y => [7, 8, 9]}, :z => "xyz"}
+ # h2.deep_merge(h1) #=> {:x => {:y => [4, 5, 6]}, :z => [7, 8, 9]}
def deep_merge(other_hash)
dup.deep_merge!(other_hash)
end
- # Returns a new hash with +self+ and +other_hash+ merged recursively.
- # Modifies the receiver in place.
+ # Same as +deep_merge+, but modifies +self+
def deep_merge!(other_hash)
other_hash.each_pair do |k,v|
tv = self[k]
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