i18n style hash

	def convert_hash(hash, path = "")
	hash.each_with_object({}) do |(k, v), ret|
	key = path + k
	if v.is_a? Hash
	ret.merge! convert_hash(v, key + ".")
	else
	ret[key] = v
	end
	end
	end
	my_hash = {'a' =>
	{'b' => 'a-b',
	'c' => 'a-c',
	'd' => {'e' => 'a-d-e'}
	},
	'f' => 'f'}
	data = convert_hash(my_hash)
	# => {"a.b"=>"a-b", "a.c"=>"a-c", "a.d.e"=>"a-d-e", "f"=>"f"}
	data["a.b"]
	# => "a-b"

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