#![feature(half_open_range_patterns_in_slices)] #![feature(exclusive_range_pattern)] 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. }