package errors

Import Path
	errors (on golang.org and go.dev)

Dependency Relation
	imports one package, and imported by 60 packages

Involved Source Files
	d-> errors.go
	    wrap.go

Exported Type Names

	(none)
Exported Values


	 func As(err error, target interface{}) bool
		As finds the first error in err's chain that matches target, and if so, sets
		target to that error value and returns true. Otherwise, it returns false.

		The chain consists of err itself followed by the sequence of errors obtained by
		repeatedly calling Unwrap.

		An error matches target if the error's concrete value is assignable to the value
		pointed to by target, or if the error has a method As(interface{}) bool such that
		As(target) returns true. In the latter case, the As method is responsible for
		setting target.

		An error type might provide an As method so it can be treated as if it were a
		different error type.

		As panics if target is not a non-nil pointer to either a type that implements
		error, or to any interface type.


	 func Is(err, target error) bool
		Is reports whether any error in err's chain matches target.

		The chain consists of err itself followed by the sequence of errors obtained by
		repeatedly calling Unwrap.

		An error is considered to match a target if it is equal to that target or if
		it implements a method Is(error) bool such that Is(target) returns true.

		An error type might provide an Is method so it can be treated as equivalent
		to an existing error. For example, if MyError defines

			func (m MyError) Is(target error) bool { return target == os.ErrExist }

		then Is(MyError{}, os.ErrExist) returns true. See syscall.Errno.Is for
		an example in the standard library.


	 func New(text string) error
		New returns an error that formats as the given text.
		Each call to New returns a distinct error value even if the text is identical.


	 func Unwrap(err error) error
		Unwrap returns the result of calling the Unwrap method on err, if err's
		type contains an Unwrap method returning error.
		Otherwise, Unwrap returns nil.