src/tools/clippy/src/docs/unnecessary_operation.txt

   1 ### What it does
   2 Checks for expression statements that can be reduced to a
   3 sub-expression.
   4
   5 ### Why is this bad?
   6 Expressions by themselves often have no side-effects.
   7 Having such expressions reduces readability.
   8
   9 ### Example
  10 ```
  11 compute_array()[0];
  12 ```