.expect()
Giống .unwrap(), nhưng khi panic thì Rust sẽ kèm theo message
#![allow(unused)]
fn main() {
let x: Option<&str> = None;
x.expect("fruits are healthy"); // panics: `fruits are healthy`
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.expect()Giống .unwrap(), nhưng khi panic thì Rust sẽ kèm theo message
#![allow(unused)]
fn main() {
let x: Option<&str> = None;
x.expect("fruits are healthy"); // panics: `fruits are healthy`
}