lua-rectangle Calculate the area and perimeter of the rectangle for Lua.
You can download lua-rectangle from luarocks with
luarocks install lua-rectangle
Or you can just clone or download this repository from github and use lua-rectangle.lua
in your project.
local square = require("lua-rectangle")
local s1 = square:new(1, 2)
ngx.say(s1:get_square())
ngx.say(s1:get_circumference())