src/librustc_error_codes/error_codes/E0329.md

   1 #### Note: this error code is no longer emitted by the compiler.
   2
   3 An attempt was made to access an associated constant through either a generic
   4 type parameter or `Self`. This is not supported yet. An example causing this
   5 error is shown below:
   6
   7 ```
   8 trait Foo {
   9     const BAR: f64;
  10 }
  11
  12 struct MyStruct;
  13
  14 impl Foo for MyStruct {
  15     const BAR: f64 = 0f64;
  16 }
  17
  18 fn get_bar_bad<F: Foo>(t: F) -> f64 {
  19     F::BAR
  20 }
  21 ```
  22
  23 Currently, the value of `BAR` for a particular type can only be accessed
  24 through a concrete type, as shown below:
  25
  26 ```
  27 trait Foo {
  28     const BAR: f64;
  29 }
  30
  31 struct MyStruct;
  32
  33 impl Foo for MyStruct {
  34     const BAR: f64 = 0f64;
  35 }
  36
  37 fn get_bar_good() -> f64 {
  38     <MyStruct as Foo>::BAR
  39 }
  40 ```