Trait Step

pub trait Step: Sized {
    // Required methods
    fn forward(start: Self, count: usize) -> Option<Self>;
    fn backward(start: Self, count: usize) -> Option<Self>;
}

A type which successor and predecessor operations can be performed on.

Similar to std::iter::Step, but not nightly-only.

Required Methods

fn forward(start: Self, count: usize) -> Option<Self>

Steps forwards by count elements.

fn backward(start: Self, count: usize) -> Option<Self>

Steps backwards by count elements.

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 Step for i8

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for i16

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for i32

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for i64

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for i128

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for isize

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for u8

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for u16

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for u32

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for u64

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for u128

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

impl Step for usize

fn forward(start: Self, count: usize) -> Option<Self>

fn backward(start: Self, count: usize) -> Option<Self>

Implementors