golang a 代码
文件路径：/test/typeparam/select.dir/a.go
/ 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 a
func F[T any](c, d chan T) T {
select {
case x := <- c:
return x
case x := <- d:
return x
}
}