--[[
	Combine a number of dictionary-like tables into a new table.

	Keys specified in later tables will overwrite keys in previous tables.

	Use `Cryo.None` as a value to remove a key. This is necessary because
	Lua does not distinguish between a value not being present in a table and a
	value being `nil`.
]]

local function join(...)
	local new = {}

	for i = 1, select("#", ...) do
		local source = select(i, ...)

		for key, value in pairs(source) do
			if value == None then
				new[key] = nil
			else
				new[key] = value
			end
		end
	end

	return new
end

return join
