and_then¶
In std/option.
fn and_then<U>(self, by: T -> Option<U>) : Option<U>
by applied to the value of self when present, its own none kept,
and none otherwise: [4][0] | and_then(x => [10][x]) is none.
and_then¶In std/option.
fn and_then<U>(self, by: T -> Option<U>) : Option<U>
by applied to the value of self when present, its own none kept,
and none otherwise: [4][0] | and_then(x => [10][x]) is none.