module Fusu::Hash::DeepMerge
Public Instance Methods
deep_merge(hash, other_hash, &block)
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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] } } Fusu::Hash.deep_merge(h1, 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 } } Fusu::Hash.deep_merge(h1, h2) { |key, this_val, other_val| this_val + other_val } # => { a: 100, b: 450, c: { c1: 300 } }
# File lib/fusu/hash/deep_merge.rb, line 19 def deep_merge(hash, other_hash, &block) deep_merge!(hash.dup, other_hash, &block) end
deep_merge!(hash, other_hash, &block)
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Same as deep_merge
, but modifies self
.
# File lib/fusu/hash/deep_merge.rb, line 24 def deep_merge!(hash, other_hash, &block) hash.merge!(other_hash) do |key, this_val, other_val| if this_val.class <= ::Hash && other_val.class <= ::Hash deep_merge(this_val, other_val, &block) elsif block_given? block.call(key, this_val, other_val) else other_val end end end