mirror of
https://github.com/golang/go
synced 2024-09-15 22:20:06 +00:00
5355753009
We don't usually reformat the test directory, but all of the files in test/typeparam are syntactically valid. I suspect the misformattings here are because developers aren't re-installing gofmt with -tags=typeparams, not intentionally exercising non-standard formatting. Change-Id: I3767d480434c19225568f3c7d656dc8589197183 Reviewed-on: https://go-review.googlesource.com/c/go/+/338093 Trust: Matthew Dempsky <mdempsky@google.com> Trust: Robert Griesemer <gri@golang.org> Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Go Bot <gobot@golang.org> Reviewed-by: Robert Griesemer <gri@golang.org>
42 lines
846 B
Go
42 lines
846 B
Go
// run -gcflags=-G=3
|
|
|
|
// 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.
|
|
|
|
// Test cases where a main dictionary is needed inside a generic function/method, because
|
|
// we are calling a method on a fully-instantiated type or a fully-instantiated function.
|
|
// (probably not common situations, of course)
|
|
|
|
package main
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
type value[T comparable] struct {
|
|
val T
|
|
}
|
|
|
|
func (v *value[T]) test(def T) bool {
|
|
return (v.val == def)
|
|
}
|
|
|
|
func (v *value[T]) get(def T) T {
|
|
var c value[int]
|
|
if c.test(32) {
|
|
return def
|
|
} else if v.test(def) {
|
|
return def
|
|
} else {
|
|
return v.val
|
|
}
|
|
}
|
|
|
|
func main() {
|
|
var s value[string]
|
|
if got, want := s.get("ab"), ""; got != want {
|
|
panic(fmt.Sprintf("get() == %d, want %d", got, want))
|
|
}
|
|
}
|