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module Hashie
module Extensions
module DeepMerge
# Returns a new hash with +self+ and +other_hash+ merged recursively.
def deep_merge(other_hash)
(class << (h = dup); self; end).send :include, Hashie::Extensions::DeepMerge
h.deep_merge!(other_hash)
end
# Returns a new hash with +self+ and +other_hash+ merged recursively.
# Modifies the receiver in place.
def deep_merge!(other_hash)
other_hash.each do |k,v|
(class << (tv = self[k]); self; end).send :include, Hashie::Extensions::DeepMerge
self[k] = tv.is_a?(::Hash) && v.is_a?(::Hash) ? tv.deep_merge(v) : v
end
self
end
end
end
end
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