errors

func As ¶

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

func Collect ¶

func Collect(cerr error, uerr ...error) error

Collect is used to collect multiple errors. `Unwrap` is noop and `Is(err, ErrMine) == true`. While `As(err, underlyingError)` do not work, you can still get underlying errors by `MError.Cause`.

func Errorf ¶

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

func Is ¶

func Is(err, target error) bool

func New ¶

func New(text string) error

func Unwrap ¶

func Unwrap(err error) error

func WithStack ¶

func WithStack(err error) error

WithStack will wrapping an error with stacktrace, given a default stack depth.

func WithStackDepth ¶

func WithStackDepth(err error, depth int) error

WithStackDepth is like WithStack, but can specify stack depth.

func Wrap ¶

func Wrap(cerr error, uerr error) error

Wrap is used to wrapping unknown errors. A typical example is that: 1. have a function `ReadMyConfig()` 2. it got errors returned from external libraries 3. you want to wrap these errors, expect `Unwrap(err) == ErrExternalErrors && Is(err, ErrReadMyConfig) && Is(err, ErrExternalErrors)`. 4. then you are finding `err := Wrap(ErrReadMyConfig, ErrExternalErrors)` Note that wrap nil error will get nil error.

func Wrapf ¶

func Wrapf(cerr error, msg string, args ...interface{}) error

Wrapf is like Wrap, with the underlying error being the result of `fmt.Errorf()`