markers

Documentation

Index

• func If(err error, pred func(err error) (interface{}, bool)) (interface{}, bool)
• func Is(err, reference error) bool
• func IsAny(err error, references ...error) bool
• func Mark(err error, reference error) error

Functions

func If

func If(err error, pred func(err error) (interface{}, bool)) (interface{}, bool)

If returns a predicate's return value the first time the predicate returns true.

Note: if any of the error types has been migrated from a previous package location or a different type, ensure that RegisterTypeMigration() was called prior to If().

func Is

func Is(err, reference error) bool

Is determines whether one of the causes of the given error or any of its causes is equivalent to some reference error.

Note: if any of the error types has been migrated from a previous package location or a different type, ensure that RegisterTypeMigration() was called prior to Is().

func IsAny

func IsAny(err error, references ...error) bool

IsAny is like Is except that multiple references are compared.

Note: if any of the error types has been migrated from a previous package location or a different type, ensure that RegisterTypeMigration() was called prior to IsAny().

func Mark

func Mark(err error, reference error) error

Mark creates an explicit mark for the given error, using the same mark as some reference error.

Note: if any of the error types has been migrated from a previous package location or a different type, ensure that RegisterTypeMigration() was called prior to Mark().