method
deep_merge
v6.1.3.1 -
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Class: Hash
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deep_merge(other_hash, &block)
public
Returns a new hash with self and other_hash merged recursively.
h1 = { a: true, b: { c: [1, 2, 3] } } h2 = { a: false, b: { x: [3, 4, 5] } } h1.deep_merge(h2) # => { a: false, b: { c: [1, 2, 3], x: [3, 4, 5] } }
Like with Hash#merge in the standard library, a block can be provided to merge values:
h1 = { a: 100, b: 200, c: { c1: 100 } } h2 = { b: 250, c: { c1: 200 } } h1.deep_merge(h2) { |key, this_val, other_val| this_val + other_val } # => { a: 100, b: 450, c: { c1: 300 } }