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# Error code E0329

#### Note: this error code is no longer emitted by the compiler.

An attempt was made to access an associated constant through either a generic type parameter or `Self`. This is not supported yet. An example causing this error is shown below:

    #![allow(unused)]
    fn main() {
    trait Foo {
        const BAR: f64;
    }

    struct MyStruct;

    impl Foo for MyStruct {
        const BAR: f64 = 0f64;
    }

    fn get_bar_bad<F: Foo>(t: F) -> f64 {
        F::BAR
    }
    }

Currently, the value of `BAR` for a particular type can only be accessed through a concrete type, as shown below:

    #![allow(unused)]
    fn main() {
    trait Foo {
        const BAR: f64;
    }

    struct MyStruct;

    impl Foo for MyStruct {
        const BAR: f64 = 0f64;
    }

    fn get_bar_good() -> f64 {
        <MyStruct as Foo>::BAR
    }
    }