Rust High Performance

Shadowing

In Rust, you can shadow a variable by creating another let binding with the same name. This is usually okay, except when we maybe only wanted to mutate a variable, for example. In general, you should avoid this practice and only use it where it helps readability.

You can use the shadow_unrelated, shadow_same, and shadow_reuse lints and warn this behavior by default, then allow it for specific situations.