【高级技巧】协程管道：生产者与消费者的解耦封装

local function producer(items)
    return coroutine.create(function()
        for _, item in ipairs(items) do
            coroutine.yield(item)
        end
    end)
end

local function consume(co, handler)
    while true do
        local ok, item = coroutine.resume(co)
        if not ok or item == nil then
            break
        end
        handler(item)
    end
end
local co = producer({ "祖玛头像", "裁决之杖", "绿宝石" })
consume(co, function(item) print("入库：" .. item) end)

local co2 = producer({ 100, 250, 80 })
consume(co2, function(gold)
    print("折算元宝：" .. math.floor(gold / 10))
end)