len_without_is_empty
Check the return type of `len`. Only integral types, or an `Option` or `Result` wrapping one. Ensure the return type of `is_empty` matches. e.g. `Option<usize>` -> `Option<bool>`
2f6439ae6a
70c0f90453
declare_clippy_lint
928e72dd10
6ed6f1e6a1
3d0b0e66af
4911ab124c