luvit-set

#luvit-set
Straightforward Lua Set library for Luvit

##Install
- Download and install Node.js. Then you have npm
- In the root of your Luvit project, npm install luvit-set

##Usage
Start off with
``lua
local Set = require("luvit-set")
`
Then, to create a set (of things you like):
`lua
local ilike = Set:new()
`
to add items to a set:
`lua
ilike:add("apples")
ilike:add("bananas")
`
or, initialise with values on creation:
`lua
local ilike = Set:new({"apples", "bananas"})
`
Let's create another set:
`lua
local ulike = Set:new({"apples", "strawberries"})
`
Then we can:
`lua
local welike = ilike + ulike -- union: apples, bananas, strawberries
local webothlike = ilike * ulike -- intersection: apples
local udontlike = ilike - ulike -- subtraction: bananas
`
Lastly, some conveniences:
`lua
local somethingilike = ilike:anelement()
ilike:len() -- 2
for k, _ in pairs(ilike) do
print(k)
end
print(ilike) -- '{"apples", "bananas"}'
local list = ilike:tolist() -- {"apples", "bananas"}
`

##Tests
npm test luvit-set

##License
LGPL+; see the LICENSE` file