• 1. Formal Arguments: 形式参数
• 2. Array Formal Arguments: 形参

• 1.You can also expand an entry in a backtrace — click the little right arrow to the left of the name — to see the values of the function's formal arguments.
  还可以展开跟踪中的条目（单击名称左边的向右小箭头），查看函数的形式参数的值。
  dict.yoduao.com
• 2.Often, you can trace the origin of a bug back to a caller that's sending the wrong type of argument, the wrong number of arguments, or a mismatch between the order of actual and formal arguments.
  常常可以发现bug的原因是调用者发送了类型错误的参数或数量错误的参数，或者实际参数和形式参数的次序不匹配。
  dict.yoduao.com
• 3.A computer can compute arguments very easily by simple algorithms but it can't do is translate an argument in English to a formal language.
  电脑可以很容易地计算论点，通过简单的算法，但是不能这样做，把一个论点从英语翻译成另一种形式语言。
  dict.yoduao.com

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