Trait rangemap::StepLite

pub trait StepLite {
    fn add_one(&self) -> Self;
    fn sub_one(&self) -> Self;
}

Minimal version of unstable Step trait from the Rust standard library.

This is needed for RangeInclusiveMap because ranges stored as its keys interact with each other when the start of one is adjacent the end of another. I.e. we need a concept of successor values rather than just equality, and that is what Step will eventually provide once it is stabilized.

NOTE: This will likely be deprecated and then eventually removed once the standard library's Step trait is stabilised, as most crates will then likely implement Step for their types where appropriate.

See this issue for details about that stabilization process.

Required methods

fn add_one(&self) -> Self

Returns the successor of self.

fn sub_one(&self) -> Self

Returns the predecessor of self.

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Implementations on Foreign Types

impl StepLite for usize

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for u8

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for u16

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for u32

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for u64

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for u128

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for i8

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for i16

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for i32

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for i64

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

impl StepLite for i128

fn add_one(&self) -> Self

fn sub_one(&self) -> Self

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Implementors

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