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Source file src/errors/example_test.go

Documentation: errors

  // Copyright 2012 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 errors_test
  
  import (
  	"fmt"
  	"time"
  )
  
  // MyError is an error implementation that includes a time and message.
  type MyError struct {
  	When time.Time
  	What string
  }
  
  func (e MyError) Error() string {
  	return fmt.Sprintf("%v: %v", e.When, e.What)
  }
  
  func oops() error {
  	return MyError{
  		time.Date(1989, 3, 15, 22, 30, 0, 0, time.UTC),
  		"the file system has gone away",
  	}
  }
  
  func Example() {
  	if err := oops(); err != nil {
  		fmt.Println(err)
  	}
  	// Output: 1989-03-15 22:30:00 +0000 UTC: the file system has gone away
  }
  

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