逗号有时不是多余的吗？(Isn't comma sometimes redundant? [closed])

 在Ruby中，从语言规范中删除了许多其他语言所需但被认为是多余的东西。 其中，一个重要的例子是分号。 除非您想连续输出语句，否则可以省略分号。 
 
 但是还有另一个角色，我通常觉得多余，而且在Ruby中仍然需要。 那是逗号。 在某些情况下，逗号不是冗余的，即，当方法参数或数组元素或哈希元素连续放在同一行上时，或者当它们被一对圆括号包围时，即使它们位于不同的行上？ 为什么Ruby不能像shell脚本那样没有逗号，并且只能选择性地使用它们来指示方法参数/数组元素/哈希元素继续到下一行？ 如果Matz继续选择分号，他为什么不用逗号来做？ 
 
 我投票结束的这个问题让我想到了这个问题。 

In Ruby, many things that were required in other languages but were felt redundant are removed from the language specification. Among them, one significant example is the semicolon. Unless you want to put statements consecutively, you can omit semicolons.
 
But there is another character that I usually feel redundant and is still required in Ruby. That is the comma. Isn't comma redundant in some cases, i.e., when method arguments or array elements or hash elements are put on the same line consecutively, or when they are surrounded by a pair of parentheses even when they are on different lines? Why cannot Ruby be without commas as with shell scripts, and use them only optionally to indicate that method arguments/array elements/hash elements continue onto the next line? If Matz went on and made semicolon optional, why didn't he do it for commas?
 
This question which I voted to close, made me think about this question.

原文：https://stackoverflow.com/questions/9659519