Contains checks if the given error contains an error with the message msg.

ContainsType checks if the given error contains an error with the same concrete type as v.

Get is the same as GetAll but returns the deepest matching error.

GetAll gets all the errors that might be wrapped in err with the given message.

GetAllType gets all the errors that are the same type as v.

GetType is the same as GetAllType but returns the deepest matching error.

Walk walks all the wrapped errors in err and calls the callback.

Wrap defines that outer wraps inner, returning an error type that can be cleanly used with the other methods in this package, such as Contains, GetAll, etc.

Wrapf wraps an error with a formatting message.

Wrapper is an interface that can be implemented by custom types to have all the Contains, Get, etc.

WalkFunc is the callback called for Walk.