Trait CalcAdd 

pub trait CalcAdd: Sized {
    type Error: Display;

    const ZERO: Self;

    // Required methods
    fn try_add(a: Self, b: Self) -> Result<Self, Self::Error>;
    fn try_sub(a: Self, b: Self) -> Result<Self, Self::Error>;
}

A trait for values that support addition and subtraction inside CSS calc() expressions.

Required Associated Constants

const ZERO: Self

The additive identity (zero) for this type.

Required Associated Types

type Error: Display

The error type returned if addition or subtraction fails.

Required Methods

fn try_add(a: Self, b: Self) -> Result<Self, Self::Error>

Attempts to add two values of this type.

fn try_sub(a: Self, b: Self) -> Result<Self, Self::Error>

Attempts to subtract one value from another.

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 CalcAdd for Val

const ZERO: Self = Val::ZERO

type Error = String

fn try_add(a: Self, b: Self) -> Result<Self, Self::Error>

fn try_sub(a: Self, b: Self) -> Result<Self, Self::Error>

impl CalcAdd for f32

const ZERO: Self = 0f32

type Error = Infallible

fn try_add(a: Self, b: Self) -> Result<Self, Self::Error>

fn try_sub(a: Self, b: Self) -> Result<Self, Self::Error>

impl CalcAdd for Rot2

const ZERO: Self = Rot2::IDENTITY

type Error = Infallible

fn try_add(a: Self, b: Self) -> Result<Self, Self::Error>

fn try_sub(a: Self, b: Self) -> Result<Self, Self::Error>

Implementors