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class Hash
# Returns a new hash with +self+ and +other_hash+ merged recursively.
def deep_merge(other_hash)
merge(other_hash) do |key, oldval, newval|
oldval = oldval.to_hash if oldval.respond_to?(:to_hash)
newval = newval.to_hash if newval.respond_to?(:to_hash)
oldval.is_a?( Hash ) && newval.is_a?( Hash ) ? oldval.deep_merge(newval) : newval
end
end
# Returns a new hash with +self+ and +other_hash+ merged recursively.
# Modifies the receiver in place.
def deep_merge!(other_hash)
replace(deep_merge(other_hash))
end
end
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