Haskell 运算符允许使用哪些字符? [英] What characters are permitted for Haskell operators?

问题描述

是否有某处允许的字符的完整列表，或者确定可以在标识符和运算符中使用什么的规则?

Is there a complete list of allowed characters somewhere, or a rule that determines what can be used in an identifier vs an operator?

推荐答案

我要找的是完整的字符列表.根据其他答案，完整列表是；

What I was looking for was the complete list of characters. Based on the other answers, the full list is;

Unicode 标点符号:

Unicode Punctuation:

• http://www.fileformat.info/info/unicode/category/Pc/list.htm
• http://www.fileformat.info/info/unicode/category/Pd/list.htm
• http://www.fileformat.info/info/unicode/category/Pe/list.htm
• http://www.fileformat.info/info/unicode/category/Pf/list.htm
• http://www.fileformat.info/info/unicode/category/Pi/list.htm
• http://www.fileformat.info/info/unicode/category/Po/list.htm
• http://www.fileformat.info/info/unicode/category/Ps/list.htm

Unicode 符号:

Unicode Symbols:

• http://www.fileformat.info/info/unicode/category/Sc/list.htm
• http://www.fileformat.info/info/unicode/category/Sk/list.htm
• http://www.fileformat.info/info/unicode/category/Sm/list.htm
• http://www.fileformat.info/info/unicode/category/So/list.htm

但是排除以下在 Haskell 中具有特殊含义的字符:

But excluding the following characters with special meaning in Haskell:

(),;[]`{}_:"'

A : 仅允许作为运算符的第一个字符，并表示构造函数(参见 以冒号开头的运算符符号是构造函数).

A : is only permitted as the first character of the operator, and denotes a constructor (see An operator symbol starting with a colon is a constructor).

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