* Takes the value out of the option, leaving a None in its place. */

* Returns the contained Some value, consuming the self value. * * Because this function may panic, its use is generally discouraged. * Instea

* Returns the contained Ok value, consuming the self value. * * Because this function may panic, its use is generally discouraged.

* Returns the contained Err value or a provided default. */

* Returns the contained Some value or a provided default. */

* Returns the contained Ok value or a provided default. */

* Returns the contained Some value or a default. * * Consumes the self argument then, if Some, returns the contained value, * otherwise if No

* Returns the contained Ok value or default */

* Returns the contained Some value or computes it from a function. */