Method: Fusu::Hash::DeepMerge#deep_merge

Defined in:

lib/fusu/hash/deep_merge.rb

#deep_merge(hash, other_hash, &block) ⇒ Object

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