Struct Binding 

pub struct Binding<T> { /* private fields */ }

A read/write handle to a value owned elsewhere (SwiftUI’s @Binding).

Components that edit a value (a toggle, a text field) take a Binding so the caller decides where the value lives. Reads are tracked like the underlying state’s reads.

Implementations

impl<T> Binding<T>

where T: 'static,

pub fn new( get: impl Fn() -> T + 'static, set: impl Fn(T) + 'static, ) -> Binding<T>

Creates a binding from a getter and a setter.

pub fn constant(value: T) -> Binding<T>

where T: Clone,

A binding that always reads value and ignores writes; useful in previews and tests.

pub fn get(&self) -> T

Reads the current value through the getter.

pub fn set(&self, value: T)

Writes value through the setter.

pub fn update(&self, f: impl FnOnce(&mut T))

Reads the value, lets f modify it, and writes it back.

pub fn map<U>( &self, get: impl Fn(&T) -> U + 'static, set: impl Fn(&mut T, U) + 'static, ) -> Binding<U>

where U: 'static,

Projects a binding onto a part of the value, e.g. one field of a struct.

Trait Implementations

impl<T> Clone for Binding<T>

fn clone(&self) -> Binding<T>

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<T> Debug for Binding<T>

fn fmt(&self, f: &mut Formatter<'_>) -> Result<(), Error>

Formats the value using the given formatter.

impl<T> FromLive for Binding<T>

where T: FromLive + IntoLive + Clone + 'static,

fn from_live(value: Value) -> Result<Binding<T>, String>

The value as this type, or why it cannot be.