|  | // 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{foo()}) { | 
|  | switch i.(type) { | 
|  | case interface{bar() T}: | 
|  | println("barT") | 
|  | case myint: | 
|  | println("myint") | 
|  | case myfloat: | 
|  | println("myfloat") | 
|  | default: | 
|  | println("other") | 
|  | } | 
|  | } | 
|  |  | 
|  | type myint int | 
|  | func (myint) foo() { | 
|  | } | 
|  | func (x myint) bar() int { | 
|  | return int(x) | 
|  | } | 
|  |  | 
|  | type myfloat float64 | 
|  | func (myfloat) foo() { | 
|  | } | 
|  |  | 
|  | func main() { | 
|  | f[int](nil) | 
|  | f[int](myint(6)) | 
|  | f[int](myfloat(7)) | 
|  | } |