Modul:Iterators

Dokumentaci tohoto modulu lze vytvořit na stránce Nápověda:Modul:Iterators

-- @brief
--  Various iterators.
-- 
-- @author
--  [[meta:User:Danny B.]]
local _module = {}
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-- @brief
--  Iterator for table sorted by its keys.
-- 
-- @param
--  tbl Table to be traversed
--  sorter nil | Sorting function 
-- 
-- @return
--  Iterator Table sorted by its keys
function _module.kpairs( tbl, sorter )
	
	local keys = {}
	
	for key in pairs( tbl ) do
		table.insert( keys, key )
	end
	
	table.sort( keys, sorter )
	
	local i = 0
	
	local iterator = function ()
		
		i = i + 1
		
		if keys[i] == nil then
			return nil
		else
			return keys[i], tbl[keys[i]]
		end
		
	end
	
	return iterator
	
end


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return _module