class Hash
TODO: Wait for this pull to be merged and released in new version of ActiveSupport. github.com/rails/rails/pull/12072
Public Instance Methods
deep_merge(other_hash, &block)
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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]} h1.deep_merge(h2) { |key, old, new| Array.wrap(old) + Array.wrap(new) } #=> {:x => {:y => [4, 5, 6, 7, 8, 9]}, :z => [7, 8, 9, "xyz"]}
# File lib/squire/core_ext/hash/deep_merge.rb, line 14 def deep_merge(other_hash, &block) dup.deep_merge!(other_hash, &block) end
deep_merge!(other_hash, &block)
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Same as deep_merge
, but modifies self
.
# File lib/squire/core_ext/hash/deep_merge.rb, line 19 def deep_merge!(other_hash, &block) other_hash.each_pair do |k,v| tv = self[k] if tv.is_a?(Hash) && v.is_a?(Hash) self[k] = tv.deep_merge(v, &block) else self[k] = block ? block.call(k, tv, v) : v end end self end