| // 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. |
| |
| package main |
| |
| import ( |
| "fmt" |
| "log" |
| ) |
| |
| func try[T any](v T, err error) T { |
| if err != nil { |
| panic(err) |
| } |
| return v |
| } |
| |
| func handle(handle func(error)) { |
| if issue := recover(); issue != nil { |
| if e, ok := issue.(error); ok && e != nil { |
| handle(e) |
| } else { |
| handle(fmt.Errorf("%v", e)) |
| } |
| } |
| } |
| |
| func main() { |
| defer handle(func(e error) { log.Fatalln(e) }) |
| _ = try(fmt.Print("")) |
| } |
