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# Error code E0529

An array or slice pattern was matched against some other type.

Example of erroneous code:

    #![allow(unused)]
    fn main() {
    let r: f32 = 1.0;
    match r {
        [a, b] => { // error: expected an array or slice, found `f32`
            println!("a={}, b={}", a, b);
        }
    }
    }

Ensure that the pattern and the expression being matched on are of consistent types:

    #![allow(unused)]
    fn main() {
    let r = [1.0, 2.0];
    match r {
        [a, b] => { // ok!
            println!("a={}, b={}", a, b);
        }
    }
    }