Trait frame_support::traits::Incrementable

pub trait Incrementable
where
    Self: Sized,
{
    // Required methods
    fn increment(&self) -> Option<Self>;
    fn initial_value() -> Option<Self>;
}

A trait representing an incrementable type.

The increment and initial_value functions are fallible. They should either both return Some with a valid value, or None.

Required Methods

fn increment(&self) -> Option<Self>

Increments the value.

Returns Some with the incremented value if it is possible, or None if it is not.

fn initial_value() -> Option<Self>

Returns the initial value.

Returns Some with the initial value if it is available, or None if it is not.

Object Safety

This trait is not object safe.

Implementations on Foreign Types

impl Incrementable for i8

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for i16

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for i32

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for i64

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for i128

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for u8

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for u16

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for u32

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for u64

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

impl Incrementable for u128

fn increment(&self) -> Option<Self>

fn initial_value() -> Option<Self>

Implementors