README.md

async.lua

为什么要用async.lua (why you need async.lua)

你可以使用async.lua来管理回调函数, 避免在callback hell里沉沦, 减少心智负担.

You can use async.lua to manage your callback functions, avoid sinking in callback hell, and reduce mental burden.

async.waterfall

和你知道的waterfall一样

waterfall call as you know

async.waterfall({
    function (callback)
        callback(nil, 1, 2)
    end,
    function (callback, a, b)
        print(a, b)
        callback(nil, 3)
    end,
    function(callback, a)
        print(a)
        callback(nil, 4)
    end
    }, 
    function (err, result)
        if err then
            print('error:', err)
        else
            print(result)
        end
    end
)