go issue50419 源码
golang issue50419 代码
文件路径：/test/typeparam/issue50419.go
// run
// Copyright 2022 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.
// Test that type substitution works correctly even for a method of a generic type
// that has multiple blank type params.
package main
import (
"fmt"
)
func main() {
foo := &Foo[string, int]{
valueA: "i am a string",
valueB: 123,
}
if got, want := fmt.Sprintln(foo), "i am a string 123\n"; got != want {
panic(fmt.Sprintf("got %s, want %s", got, want))
}
}
type Foo[T1 any, T2 any] struct {
valueA T1
valueB T2
}
func (f *Foo[_, _]) String() string {
return fmt.Sprintf("%v %v", f.valueA, f.valueB)
}
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