Struct Retain 

pub struct Retain(/* private fields */);

A metadata key that retains a value for its lifetime.

This is useful for keeping watcher guards, subscriptions, or other values alive as long as the view exists. The retained value is dropped when the view is dropped.

This type implements MetadataKey and is used with Metadata, so renderers must handle it (by extracting content and keeping the value alive).

Implementations

impl Retain

pub fn new<T: 'static>(value: T) -> Self

Creates a new Retain from a value.

Trait Implementations

impl Debug for Retain

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

Formats the value using the given formatter.

impl MetadataKey for Retain