// run // Copyright 2021 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. package main import "fmt" func f[T any](i interface{}) { switch x := i.(type) { case T: fmt.Println("T", x) case int: fmt.Println("int", x) case int32, int16: fmt.Println("int32/int16", x) case struct{ a, b T }: fmt.Println("struct{T,T}", x.a, x.b) default: fmt.Println("other", x) } } func main() { f[float64](float64(6)) f[float64](int(7)) f[float64](int32(8)) f[float64](struct{ a, b float64 }{a: 1, b: 2}) f[float64](int8(9)) f[int32](int32(7)) f[int](int32(7)) f[any](int(10)) f[interface{ M() }](int(11)) }