讀寫檔案+非同步處理，複習一下

---
--- Generated by EmmyLua(https://github.com/EmmyLua)
--- Created by andrew.
--- DateTime: 2018/3/12 13:53
---


local send = coroutine.create( function()
    local hint = "testSend:"

    local file = io.open("TestCoroutine.lua", "r")

    while true do
        local text = file:read()
        if nil == text then
            break
        end
        coroutine.yield(text)
    end

    file:close()
end)

print(coroutine.status(send))

for line = 1, 50 do
    local status, text = coroutine.resume(send)
    local s            = coroutine.status(send)
    print(line, ", s = ", s, ", status = ", status, ", text = ", text)
    if not status then
        break
    end

    line = line + 1
end