Understanding Rust Error E0560: Unknown Field in Structure

Understanding Rust Error E0560

Rust Error E0560 occurs when an unknown field is specified in a structure. It means you are trying to use a field that is not defined in a specific structure.

Consider this erroneous code example:

#![allow(unused)]
fn main() {
    struct Simba {
        mother: u32,
    }

    let s = Simba { mother: 1, father: 0 };
    // error: structure `Simba` has no field named `father`
}

How to Fix Rust Error E0560

The Rust error can be fixed by verifying the field's name or ensuring that the field exists in the defined structure. Use the appropriate field name or add the missing field to the structure definition.

Here is a corrected version of the previous code example:

#![allow(unused)]
fn main() {
    struct Simba {
        mother: u32,
        father: u32,
    }

    let s = Simba { mother: 1, father: 0 }; // ok!
}

In this corrected example, the `father` field has been added to the `Simba` structure definition, fixing the error.

Conclusion

Rust Error E0560 occurs when an unknown field is specified in a structure. To fix this error, double-check the field names and ensure that the requested field exists in the structure definition. Adjusting the code according to the structure definition will resolve the E0560 error and prevent similar issues in the future.

Understanding Rust Error E0560: Unknown Field in Structure