Trait Index 

pub trait Index:
    Copy
    + Eq
    + Ord
    + Send
    + Sync
    + Debug
    + Add<Output = Self>
    + Sub<Output = Self> {
    // Required methods
    fn from_usize(v: usize) -> Self;
    fn to_usize(self) -> usize;
    fn zero() -> Self;
}

Trait implemented by integer types usable as suffix array indices.

Provided for u32, u64, and usize. Callers pick the narrowest type large enough to address their text.

Required Methods

fn from_usize(v: usize) -> Self

Convert from usize.

Current primitive implementations use Rust’s as casts and therefore truncate if the value does not fit. Public constructors dispatch to an index width large enough for their generated positions; callers that invoke generic internals directly must choose an I that can represent every position they pass.

fn to_usize(self) -> usize

Convert to usize. Lossless for u32/u64/usize on 64-bit targets.

fn zero() -> Self

The zero value.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl Index for u32

fn from_usize(v: usize) -> Self

fn to_usize(self) -> usize

fn zero() -> Self

impl Index for u64

fn from_usize(v: usize) -> Self

fn to_usize(self) -> usize

fn zero() -> Self

impl Index for usize

fn from_usize(v: usize) -> Self

fn to_usize(self) -> usize

fn zero() -> Self

Implementors