CoffeeScript Hubot帮助：从函数获取数据

我是个新手，需要Hubot/CoffeeScript的帮助

我有几个响应，它们将从同一个源获取数据，但使用和响应不同的有效负载片段。例如

module.exports = (robot) ->
    robot.hear /score/i, (msg) ->
        score = getScore(today)
        msg.send "today's score is " + score
    robot.hear /yesterday's score/i, (msg) ->
        score = getStore(yesterday) ->
        msg.send "yesterday's score was " + score

为分数数据构建URL的过程包括查找当前月份、日期和年份。我不想这样做超过一次，但我会有很多像上面一样使用相同数据的回复。我原以为我能做到这一点

getScore = (day) ->
    #build the url and get the data set
    #pick the right piece of data based on the day variable and assign it to score'

我想这不起作用，因为它是异步的。但是，在getScore函数中执行msg.send不起作用。那么，我如何做到这一点，以使我不必在每个robot.hear部分重复getScroe代码

谢谢

伪代码：

getScore = (day, callback) ->
      # get the score...
      callback(score)


robot.hear /yesterday's score/i, (msg) ->
    getScore "yesterday", (score) ->
        msg.send "yesterday's score was " + score

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知道了！谢谢eostergerg！我仍在努力研究异步函数。