src/tools/clippy/src/docs/box_default.txt

   1 ### What it does
   2 checks for `Box::new(T::default())`, which is better written as
   3 `Box::<T>::default()`.
   4
   5 ### Why is this bad?
   6 First, it's more complex, involving two calls instead of one.
   7 Second, `Box::default()` can be faster
   8 [in certain cases](https://nnethercote.github.io/perf-book/standard-library-types.html#box).
   9
  10 ### Example
  11 ```
  12 let x: Box<String> = Box::new(Default::default());
  13 ```
  14 Use instead:
  15 ```
  16 let x: Box<String> = Box::default();
  17 ```