16 lines
661 B
Rust
16 lines
661 B
Rust
#![feature(half_open_range_patterns_in_slices)]
|
|
|
|
fn main() {
|
|
let xs = [13, 1, 5, 2, 3, 1, 21, 8];
|
|
let [a, b, c, rest @ ..] = xs;
|
|
// Consider the following example:
|
|
assert!(a == 13 && b == 1 && c == 5 && rest.len() == 5);
|
|
|
|
// What if we wanted to pull this apart without individually binding a, b, and c?
|
|
let [first_three @ ..3, rest @ 2..] = xs;
|
|
//~^ pattern requires 2 elements but array has 8
|
|
// This is somewhat unintuitive and makes slice patterns exceedingly verbose.
|
|
// We want to stabilize half-open RangeFrom (`X..`) patterns
|
|
// but without banning us from using them for a more efficient slice pattern syntax.
|
|
}
|