> all you want to do is return an error Nope. This isn't even true in all situations. For a simple example, just look at description of the extremely popular i

> all you want to do is return an error Nope. This isn't even true in all situations. For a simple example, just look at description of the extremely popular io.Reader: > An instance of this general case is that a Reader returning a non-zero number of bytes at the end of the input stream may return either err == EOF or err == nil. https://godocs.io/io#Reader https://godocs.io/io#Reader