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How is a package level interface check a “language hack”? They are straight forward and provide a user the same compile time guarantees as the Java implements k
by flakes 2mo ago
How is a package level interface check a “language hack”? They are straight forward and provide a user the same compile time guarantees as the Java implements keyword.
- pjmlp 2mo agoBecause they are a workaround for what should be a language feature in first place, just like on ML languages to type check structural types.
- flakes 2mo agoWhat exactly isn’t a language feature? Or do you have issues with semantics? var _ Foo = (*Bar)(nil) The statement asserts that Bar struct pointers are assignable to a Foo interface. I do agree it’s not as clean looking as the Java implements keyword, but it’s already a fairly terse pattern and IMO the inconvenience does not justify introducing new language syntax.