mirror of
https://github.com/golang/go
synced 2024-11-07 11:36:11 -07:00
35 lines
576 B
Go
35 lines
576 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.
|
||
|
|
|
||
|
|
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(""))
|
||
|
|
}
|