module Hashie::Extensions::DeepMerge
Public Instance Methods
deep_merge(other_hash, &block)
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Returns a new hash with self
and other_hash
merged recursively.
# File lib/hashie/extensions/deep_merge.rb, line 5 def deep_merge(other_hash, &block) copy = _deep_dup(self) copy.extend(Hashie::Extensions::DeepMerge) unless copy.respond_to?(:deep_merge!) copy.deep_merge!(other_hash, &block) end
deep_merge!(other_hash, &block)
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Returns a new hash with self
and other_hash
merged recursively. Modifies the receiver in place.
# File lib/hashie/extensions/deep_merge.rb, line 13 def deep_merge!(other_hash, &block) return self unless other_hash.is_a?(::Hash) _recursive_merge(self, other_hash, &block) self end
Private Instance Methods
_deep_dup(hash)
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# File lib/hashie/extensions/deep_merge.rb, line 21 def _deep_dup(hash) copy = hash.dup copy.each do |key, value| copy[key] = if value.is_a?(::Hash) _deep_dup(value) else Hashie::Utils.safe_dup(value) end end copy end
_recursive_merge(hash, other_hash) { |k, hash, v| ... }
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# File lib/hashie/extensions/deep_merge.rb, line 36 def _recursive_merge(hash, other_hash, &block) other_hash.each do |k, v| hash[k] = if hash.key?(k) && hash[k].is_a?(::Hash) && v.is_a?(::Hash) _recursive_merge(hash[k], v, &block) elsif v.is_a?(::Hash) _recursive_merge({}, v, &block) elsif hash.key?(k) && block_given? yield(k, hash[k], v) else v.respond_to?(:deep_dup) ? v.deep_dup : v end end hash end