E0783 - Error codes index
Description: Book listing all Rust error codes

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# Error code E0783

The range pattern `...` is no longer allowed.

Erroneous code example:

    #![allow(unused)]
    fn main() {
    match 2u8 {
        0...9 => println!("Got a number less than 10"), // error!
        _ => println!("Got a number 10 or more"),
    }
    }

Older Rust code using previous editions allowed `...` to stand for inclusive ranges which are now signified using `..=`.

To make this code compile replace the `...` with `..=`.

    #![allow(unused)]
    fn main() {
    match 2u8 {
        0..=9 => println!("Got a number less than 10"), // ok!
        _ => println!("Got a number 10 or more"),
    }
    }