RS.CLIPPY.MANUAL_BITS

Manual implementation of `size_of::<T>() * 8` can be simplified with `T::BITS`

This checker is a Clippy lint created by The Rust Project Contributors. The documentation shown here is a copy of the original documentation for: manual_bits. Copyright ©2025 The Rust Team. All rights reserved.

What it does

Checks for usage of size_of::<T>() * 8 when T::BITS is available.

Why is this bad?

Can be written as the shorter T::BITS.

Example

size_of::<usize>() * 8;

Use instead:

usize::BITS as usize;

Configuration

  • msrv: The minimum rust version that the project supports. Defaults to the rust-version field in Cargo.toml

    (default: current version)