Trait UsizeTag 

pub trait UsizeTag: Sized {
    // Required methods
    fn from_usize(n: usize) -> Self;
    fn to_usize(&self) -> usize;
    fn try_to_usize(&self) -> Option<usize>;
}

Discriminant arithmetic glue to make #[derive(Enum)] function.

Required Methods

fn from_usize(n: usize) -> Self

Used by EnumTag::from_const.

Panics

Panics on out-of-bounds.

fn to_usize(&self) -> usize

Convert a trusted value to usize.

fn try_to_usize(&self) -> Option<usize>

Convert an untrusted value to usize.

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 UsizeTag for bool

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for i8

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for i16

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for i32

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for i64

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for i128

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for u8

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for u16

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for u32

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for u64

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for u128

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<i8>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<i16>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<i32>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<i64>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<i128>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<u8>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<u16>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<u32>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<u64>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

impl UsizeTag for NonZero<u128>

fn from_usize(n: usize) -> Self

fn to_usize(&self) -> usize

fn try_to_usize(&self) -> Option<usize>

Implementors

impl<K: ToInt<u8>> UsizeTag for PartialByteTag<K>

impl<T: UsizeTag, const MAX: usize> UsizeTag for EnumTag<T, MAX>