如果在Swift中使用运算符，则返回Infix

Question

I have much of validation like this 我有很多这样的验证

if (someBoolean) return

Can I create an infix operator with following syntax? 我可以使用以下语法创建中缀运算符吗？

returnif someBoolean

Answer 1

No, you can't write this operator (which would be prefix rather than infix), for two reasons: 不，您不能编写此运算符（该运算符为前缀而不是中缀），原因有两个：

operators can't be defined with alphanumeric characters (see the docs for a rundown of what they can be defined with) 运算符不能用字母数字字符定义（有关可定义的内容的摘要，请参见文档）
you can't write a function (which is what custom operators are) that results in a return in it's calling scope ie return within the operator function would just return from the operator function, not from the function you used the operator in 您无法编写一个函数（这是自定义运算符），从而导致其调用范围内的返回，即，运算符函数内的返回只会从运算符函数中返回，而不是从您在运算符中使用过的函数中返回