local p = {}

local function getLabel(id)
	return mw.wikibase.label(id) or ''
end

function p.test()
	local array = {}
	for i = 201, 400 do
		table.insert(array, i)
	end
	local start = os.clock()
	table.sort(array, function(a, b)
		return getLabel('Q' .. a) < getLabel('Q' .. b)
	end)
	local stop = os.clock()
	mw.log(stop - start)
end

return p

local cache = {}
local function getLabel(id)
	if not cache[id] then
		cache[id] = mw.wikibase.label(id) or ''
	end
	return cache[id]
end