node.js - Array.push，数组保持为空

Question

我正在尝试从我的 redis 数据库中获取所有 hget 值。但是数组日志保持为空。你们可以看看吗？谢谢

getAllHMSets = (cb) ->
  client.keys "log:*", (err, logKeys) ->
    if not err and logKeys isnt null
      logs = new Array()
      i = 0
      while i < logKeys.length
        client.hgetall logKeys[i], (err, log) ->
          if not err and log isnt null
            logs.push log
        i++

      if logs.length is logKeys.length
        cb logs  if typeof cb is "function"

Answer 1

我认为您的代码有两个问题:

1. 你应该用更地道的 CoffeeScript 编写它

2. 您对 hgetall 的调用也必须使用回调，否则您的数组将永远不会被填充。

getAllHMSets = (cb) ->
  client.keys "log:*", (err, logKeys) ->
    if not err and logKeys isnt null

      logs = []

      for value in logKeys
        client.hgetall logKeys[i], (err, log) ->
          if not err and log isnt null
            logs.push log
            if logs.length is logKeys.length
              cb logs  if typeof cb is "function"