moonpie.collections

Various collections and structures to help provide functionality to lua tables.

local a_list = moonpie.collections.list:new()
a_list:add("stuff", 1, 4, "more-stuff")
if a_list:contains(4) then
  print "It does!"
end

moonpie.collections.iterators

Iterators provide a variety of functions for iterating over tables. They should work with any index based table.

moonpie.collections.iterators.cycle

The cycle iterator allows continuous looping over an array. It also provides the ability to move backwards through the list.

moonpie.collections.iterators.cycle(array_table, count) array_table = any table with an index list count = the limit of cycles to perform

local set = { 1, 2, 3, 4 }

for value, index in moonpie.collections.iterators.cycle(set, 2) do
  print(value)
end

--
-- Output:
--
-- 1
-- 2
-- 3
-- 4
-- 1
-- 2
-- 3
-- 4

local set = { 1, 2, 3, 4 }
local cycle_iter = moonpie.collections.iterators.cycle(set)
print(cycle_iter.previous()) -- Output: 4
print(cycle_iter.previous()) -- Output: 3