Trait Dimension 

pub trait Dimension<'a, S: Summary>: Clone {
    // Required methods
    fn zero(cx: S::Context<'_>) -> Self;
    fn add_summary(&mut self, summary: &'a S, cx: S::Context<'_>);

    // Provided methods
    fn with_added_summary(self, summary: &'a S, cx: S::Context<'_>) -> Self { ... }
    fn from_summary(summary: &'a S, cx: S::Context<'_>) -> Self { ... }
}

Each Summary type can have more than one Dimension type that it measures.

You can use dimensions to seek to a specific location in the SumTree

Example:

Zed’s rope has a TextSummary type that summarizes lines, characters, and bytes. Each of these are different dimensions we may want to seek to

Required Methods

fn zero(cx: S::Context<'_>) -> Self

fn add_summary(&mut self, summary: &'a S, cx: S::Context<'_>)

Provided Methods

fn with_added_summary(self, summary: &'a S, cx: S::Context<'_>) -> Self

fn from_summary(summary: &'a S, cx: S::Context<'_>) -> Self

Dyn Compatibility

This trait is not dyn compatible.

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

Implementations on Foreign Types

impl<'a, T: Summary> Dimension<'a, T> for ()

fn zero(_: T::Context<'_>) -> Self

fn add_summary(&mut self, _: &'a T, _: T::Context<'_>)

Implementors

impl<'a, T: Summary, D1: Dimension<'a, T>, D2: Dimension<'a, T>, D3: Dimension<'a, T>> Dimension<'a, T> for Dimensions<D1, D2, D3>

impl<'a, T: Summary> Dimension<'a, T> for T