Trait SmallUnsigned 

pub trait SmallUnsigned {
    // Required methods
    fn usize(&self) -> usize;
    fn checked_from(num: usize) -> Self;
}

Convenience trait for unsigned normalization (e.g. to/from usize).

Required Methods

fn usize(&self) -> usize

Upcast: Get value of small unsigned as host register-width unsigned (e.g. usize)

fn checked_from(num: usize) -> Self

Downcast: Convert input usize into a primitive implementing the SmallUnsigned trait. Panics if usize exceeds max for returned unsigned primitive. core::convert::From not used b/c SmallUnsigned is not generic by design, implemented only for (u8, u16, u32, u64, u128) and only up to host integer width.

Note

Unlike others, this API has a tiny (1 comparison/branch) runtime cost. The check in checked_from is an assert to prevent loss of precision.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl SmallUnsigned for u8

fn usize(&self) -> usize

fn checked_from(num: usize) -> u8

impl SmallUnsigned for u16

fn usize(&self) -> usize

fn checked_from(num: usize) -> u16

impl SmallUnsigned for u32

fn usize(&self) -> usize

fn checked_from(num: usize) -> u32

impl SmallUnsigned for usize

fn usize(&self) -> usize

fn checked_from(num: usize) -> usize

Implementors