cause

Documentation

Index

• func WithError(cause error, err error) error

Examples

• WithError

Functions

func WithError

func WithError(cause error, err error) error

WithError annotates cause error with a new error. If cause is nil, WithError returns new error. If err is nil, WithError returns nil.

Example

package main

import (
	"errors"
	"fmt"

	"github.com/searKing/golang/go/error/cause"
)

func main() {
	cause_ := errors.New("whoops")
	err := fmt.Errorf("oh noes")
	err = cause.WithError(cause_, err)
	fmt.Println(err)

}

Output:

oh noes: whoops