blob: b84fdd02eaae3793b175bb6b1ee37c88e7133092 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
// 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
type I interface{ foo() int }
type J interface {
I
bar()
}
type myint int
func (x myint) foo() int { return int(x) }
type myfloat float64
func (x myfloat) foo() int { return int(x) }
type myint32 int32
func (x myint32) foo() int { return int(x) }
func (x myint32) bar() {}
func f[T I](i I) {
switch x := i.(type) {
case T:
println("T", x.foo())
case myint:
println("myint", x.foo())
default:
println("other", x.foo())
}
}
func main() {
f[myfloat](myint(6))
f[myfloat](myfloat(7))
f[myfloat](myint32(8))
f[myint32](myint32(8))
f[myint32](myfloat(7))
f[myint](myint32(9))
f[I](myint(10))
f[J](myint(11))
f[J](myint32(12))
}
|
