lua:instance

lua:instance

Hello = {}

function Hello:new() --private method.
    local store = nil
    return function(self)
        if store then return store end
        print"create." --for test.
        local o = {}
        setmetatable(o, self)
        self.__index = self
        store = o
        return store
    end
end


Hello.instance = Hello:new() --implement single instance object.

--test following
local hello = Hello:instance() --> create.
local hellohello = Hello:instance() --no output