Trait Predecessor 

pub trait Predecessor {
    // Required method
    fn prev_value(self) -> Self;
}

Predecessor trait for numbers.

Required Methods

fn prev_value(self) -> Self

Return self - 1. Panics when self is at 0.

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 Predecessor for u8

fn prev_value(self) -> u8

impl Predecessor for u16

fn prev_value(self) -> u16

impl Predecessor for u32

fn prev_value(self) -> u32

impl Predecessor for u64

fn prev_value(self) -> u64

impl Predecessor for usize

fn prev_value(self) -> usize

Implementors