src/tools/clippy/src/docs/missing_trait_methods.txt

   1 ### What it does
   2 Checks if a provided method is used implicitly by a trait
   3 implementation. A usage example would be a wrapper where every method
   4 should perform some operation before delegating to the inner type's
   5 implemenation.
   6
   7 This lint should typically be enabled on a specific trait `impl` item
   8 rather than globally.
   9
  10 ### Why is this bad?
  11 Indicates that a method is missing.
  12
  13 ### Example
  14 ```
  15 trait Trait {
  16     fn required();
  17
  18     fn provided() {}
  19 }
  20
  21 #[warn(clippy::missing_trait_methods)]
  22 impl Trait for Type {
  23     fn required() { /* ... */ }
  24 }
  25 ```
  26 Use instead:
  27 ```
  28 trait Trait {
  29     fn required();
  30
  31     fn provided() {}
  32 }
  33
  34 #[warn(clippy::missing_trait_methods)]
  35 impl Trait for Type {
  36     fn required() { /* ... */ }
  37
  38     fn provided() { /* ... */ }
  39 }
  40 ```