half_open_range_patterns_in_slices - The Rust Unstable Book

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# `half_open_range_patterns_in_slices`

The tracking issue for this feature is: #67264 It is a future part of the `exclusive_range_pattern` feature, tracked at #37854.

This feature allow using top-level half-open range patterns in slices.

    #![feature(half_open_range_patterns_in_slices)]

    fn main() {
        let xs = [13, 1, 5, 2, 3, 1, 21, 8];
        let [a @ 3.., b @ ..3, c @ 4..6, ..] = xs else { return; };
    }

Note that this feature is not required if the patterns are wrapped between parenthesis.

    fn main() {
        let xs = [13, 1];
        let [(a @ 3..), c] = xs else { return; };
    }