Hi
I was wondering if you had any interest in support for go1.13 error wrapping? For example:
const (
ErrIncorrectLength Error = iota + 1
// Other sentinel error types here
)
type Error int
func (e Error) Error() string {
switch e {
case ErrIncorrectLength:
return "incorrect length"
// Other error strings here
default:
return "unknown error"
}
}
func (u *UUID) UnmarshalText(text []byte) error {
switch len(text) {
// Previous switch conditions
default:
return fmt.Errorf("uuid: %w %d in string %q", ErrIncorrectLength, len(text), text)
}
}This would allow for the usage of errors.Is() and errors.As(), useful for testing or performing other conditional logic based on the type of error, for example:
id, err := uuid.FromString("foo")
if err != nil {
if errors.Is(err, uuid.ErrIncorrectLength) {
// some bespoke logic
}
}If you approve I'd be more than happy to open a PR with the implementation detail.If backwards compatibility is a concern we can probably get around it with build tags.
Demo over on the playground: https://play.golang.org/p/H5teBSdvfct
Hi
I was wondering if you had any interest in support for go1.13 error wrapping? For example:
This would allow for the usage of
errors.Is()anderrors.As(), useful for testing or performing other conditional logic based on the type of error, for example:If you approve I'd be more than happy to open a PR with the implementation detail.If backwards compatibility is a concern we can probably get around it with build tags.
Demo over on the playground: https://play.golang.org/p/H5teBSdvfct