resultext

func (Result[T, E]) And ¶ added in v5.23.0

func (r Result[T, E]) And(fn func(T) T) Result[T, E]

And calls the provided function with the contained value if the result is Ok, returns the Result value otherwise.

func (Result[T, E]) AndThen ¶ added in v5.23.0

func (r Result[T, E]) AndThen(fn func(T) Result[T, E]) Result[T, E]

AndThen calls the provided function with the contained value if the result is Ok, returns the Result value otherwise.

This differs from `And` in that the provided function returns a Result[T, E] allowing changing of the Option value itself.

func (Result[T, E]) Err ¶

func (r Result[T, E]) Err() E

Err returns the error of the result. To be used after calling IsOK()

func (Result[T, E]) IsErr ¶

func (r Result[T, E]) IsErr() bool

IsErr returns true if the result is not successful and has an error.

func (Result[T, E]) IsOk ¶

func (r Result[T, E]) IsOk() bool

IsOk returns true if the result is successful with no error.

func (Result[T, E]) Unwrap ¶

func (r Result[T, E]) Unwrap() T

Unwrap returns the values of the result. It panics if there is no result due to not checking for errors.

func (Result[T, E]) UnwrapOr ¶ added in v5.22.0

func (r Result[T, E]) UnwrapOr(value T) T

UnwrapOr returns the contained Ok value or a provided default.

Arguments passed to UnwrapOr are eagerly evaluated; if you are passing the result of a function call, look to use `UnwrapOrElse`, which can be lazily evaluated.

func (Result[T, E]) UnwrapOrDefault ¶ added in v5.22.0

func (r Result[T, E]) UnwrapOrDefault() T

UnwrapOrDefault returns the contained Ok value or the default value of the type T.

func (Result[T, E]) UnwrapOrElse ¶ added in v5.22.0

func (r Result[T, E]) UnwrapOrElse(fn func() T) T

UnwrapOrElse returns the contained Ok value or computes it from a provided function.