lua syntax sugar for basic values(number, function, coroutine)

sugars.lua

-- https://stackoverflow.com/questions/33988610/weird-behavior-of-syntax-sugarcolon-in-lua

local debug = require 'debug'
debug.setmetatable(0, { __index = math })
debug.setmetatable(function() end, { __index = coroutine })
debug.setmetatable(coroutine.create(function() end), { __index = coroutine })

local table = require 'table'
table.new = function (self, t)
    t = t or self
    return setmetatable(t, { __index = table })
end
setmetatable(table, { __call = table.new })