Module: SinDeepMerge::Fallback

Defined in:
lib/sin_deep_merge/fallback.rb

Overview

ActiveSupport's implementation, kept for Hash subclasses that override merge! or update, ActiveSupport's HashWithIndifferentAccess being the common one. The extensions write straight into the storage of the hash, which skips such an override, so they hand those receivers here instead. dup and merge! are called on the receiver so that its own overrides run.

Class Method Summary collapse

Class Method Details

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



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# File 'lib/sin_deep_merge/fallback.rb', line 10

def deep_merge(hash, other_hash, &block)
  deep_merge!(hash.dup, other_hash, &block)
end

.deep_merge!(hash, other_hash, &block) ⇒ Object 



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# File 'lib/sin_deep_merge/fallback.rb', line 14

def deep_merge!(hash, other_hash, &block)
  hash.merge!(other_hash) do |key, this_val, other_val|
    if this_val.is_a?(Hash) && other_val.is_a?(Hash)
      this_val.deep_merge(other_val, &block)
    elsif block
      yield(key, this_val, other_val)
    else
      other_val
    end
  end
end