Install
Set is a listed LuaRock. Install using LuaRocks: luarocks install set
Dependencies
Set depends on Lua 5.2. lunitx is needed to run the tests and will be installed if not present
Usage
Start off with
require("luarocks.loader")
local Set = require("Set")
Then, to create a set:
local ilike = Set:new()
to add items to a set:
ilike:add("apples")
ilike:add("bananas")
or, we could have done:
local ilike = Set:new({"apples", "bananas"})
Let's have another set:
local ulike = Set:new({"apples", "strawberries"})
Then we can:
local welike = ilike + ulike -- union: apples, bananas, strawberries
local webothlike = ilike * ulike -- intersection: apples
local udontlike = ilike - ulike -- subtraction: bananas
Lastly, some conveniences:
ilike:len() -- 2
local somethingilike = ilike:anelement()
print(ilike) -- {"apples", "bananas"}
Tests
See ./tst/init.lua
License
LGPL+; see ./doc/LICENSE