3 ms·

How does Go handle the ambiguity between [] meaning generics and [] also meaning array?

• pphysch 5y ago
  You can use optional(?) parenthesis to make it extra clear. []MyContainer[T] // slice of generic struct or interface can/must be written as [](MyContainer[T]) but ([]MyContainer)[T] isn't a valid use of generics anyways.
  • bruce343434 5y ago
    What about accesses? Seems like this would require at least some context in the parser. And what about the human parser? Do you get confused between arrays, array accesses, templates? Or do you get used to it? T int = 5 myarray[T]
    • pphysch 5y ago
      'T' is a completely normal identifier, it is merely the conventional one used as a type parameter. But you can also use Type, MyType, etc instead of T as that parameter identifier. The compiler can easily detect if the thing in the [] is a int or type.
• uluyol 5y ago
  In most cases there is no parsing ambiguity. In the cases where there are, you need to use parenthesis to clarify.