// 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 func f[T any](i interface{}) { switch i.(type) { case T: println("T") case int: println("int") case int32, int16: println("int32/int16") case struct{ a, b T }: println("struct{T,T}") default: println("other") } } 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)) }