Home | History | Annotate | Download | only in errors 
      1 // Copyright 2012 The Go Authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style
      3 // license that can be found in the LICENSE file.
      4 
      5 package errors_test
      6 
      7 import (
      8 	"fmt"
      9 	"time"
     10 )
     11 
     12 // MyError is an error implementation that includes a time and message.
     13 type MyError struct {
     14 	When time.Time
     15 	What string
     16 }
     17 
     18 func (e MyError) Error() string {
     19 	return fmt.Sprintf("%v: %v", e.When, e.What)
     20 }
     21 
     22 func oops() error {
     23 	return MyError{
     24 		time.Date(1989, 3, 15, 22, 30, 0, 0, time.UTC),
     25 		"the file system has gone away",
     26 	}
     27 }
     28 
     29 func Example() {
     30 	if err := oops(); err != nil {
     31 		fmt.Println(err)
     32 	}
     33 	// Output: 1989-03-15 22:30:00 +0000 UTC: the file system has gone away
     34 }
     35