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go/test/typeparam/typeswitch2.go
Matthew Dempsky d168c4f296 test: additional generic type switch test coverage
None of the current generic type switch test cases exercise type
switches where the instantiated case is an interface type.

Change-Id: I9272fa61b8dde1fe1a3702d524d4f40253ef19b2
Reviewed-on: https://go-review.googlesource.com/c/go/+/390354
Trust: Matthew Dempsky <mdempsky@google.com>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
2022-03-07 13:47:58 +00:00

36 lines
709 B
Go

// 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))
}