Class: Hash

Inherits:
Object
  • Object
show all
Defined in:
lib/dry-stack/stack.rb

Instance Method Summary collapse

Instance Method Details

#deep_merge!(second) ⇒ Object 



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# File 'lib/dry-stack/stack.rb', line 21

def deep_merge!(second)
  merger = proc { |_, v1, v2|
    if Hash === v1 && Hash === v2
      v1.merge!(v2, &merger)
    else
      if Array === v1 && Array === v2
        v1 | v2
      else
        [:undefined, nil, :nil].include?(v2) ? v1 : v2
      end
    end
  }
  merge!(second.to_h, &merger)
end