Why Go
- Case Studies
  
  Common problems companies solve with Go
- Use Cases
  
  Stories about how and why companies use Go
- Security
  
  How Go can help keep you secure by default
Learn
Docs
- Effective Go
  
  Tips for writing clear, performant, and idiomatic Go code
- Go User Manual
  
  A complete introduction to building software with Go
- Standard library
  
  Reference documentation for Go's standard library
- Release Notes
  
  Learn what's new in each Go release
- API
  
  Reference documentation for the pkg.go.dev API
Packages
Community
- Recorded Talks
  
  Videos from prior events
- Meetups
  
  Meet other local Go developers
- Conferences
  
  Learn and network with Go developers from around the world
- Go blog
  
  The Go project's official blog.
- Go project
  
  Get help and stay informed from Go
- Get connected

errors

package module

Go to main page

Versions in this module

v1

v1.0.4

Sep 26, 2026

Changes in this version

+ func AsType[ERROR error](err error) (ERROR, bool)

v1.0.3

Sep 25, 2026

v1.0.2

Sep 15, 2026

Changes in this version

+ type AbstractError interface

+ Cause func() error

+ Is func(chk error) bool

+ Unwrap func() error

+ WithCause func(reason error) AbstractError[ERROR]

+ Wrap func(message string) ERROR

+ Wrapf func(format string, args ...any) ERROR

+ func Exec[ERROR AbstractError[ERROR], T1 any, T2 error](_err ERROR, exec func() (T1, error)) (T1, AbstractError[ERROR])

v1.0.1

Jul 7, 2026

Changes in this version

+ func As(err error, target interface{}) bool

+ func Cause(err error) error

+ func Errorf(code GoCode, format string, args ...interface{}) error

+ func Is(err, target error) bool

+ func Join(errs ...error) error

+ func Unwrap(err error) error

+ func WithMessage(err error, message string) error

+ func WithMessagef(err error, format string, args ...interface{}) error

+ func Wrap(err error, message string) error

+ func Wrapf(err error, format string, args ...interface{}) error

+ type Error struct

+ Code GoCode

+ Message string

+ Reason error

+ Related []error

+ func New(code GoCode, message string, related ...error) Error

+ func (e Error) Cause() error

+ func (e Error) Error() string

+ func (e Error) Is(chk error) bool

+ func (e Error) Unwrap() error

+ func (e Error) WithCause(reason error) Error

+ func (e Error) Wrap(message string) Error

+ func (e Error) Wrapf(format string, args ...any) Error

+ type GoCode string

+ const CodeUnknown

v1.0.0

Jul 4, 2026