Editando: switch7.go
// errorcheck // Copyright 2016 The Go Authors. All rights reserved. // Use of this source code is governed by a BSD-style // license that can be found in the LICENSE file. // Verify that type switch statements with duplicate cases are detected // by the compiler. // Does not compile. package main import "fmt" func f4(e interface{}) { switch e.(type) { case int: case int: // ERROR "duplicate case int in type switch" case int64: case error: case error: // ERROR "duplicate case error in type switch" case fmt.Stringer: case fmt.Stringer: // ERROR "duplicate case fmt.Stringer in type switch" case struct { i int "tag1" }: case struct { i int "tag2" }: case struct { // ERROR "duplicate case struct { i int .tag1. } in type switch|duplicate case" i int "tag1" }: } }
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