Trait OptionsChangeTokenSource 

pub trait OptionsChangeTokenSource<T: Value> {
    // Required method
    fn token(&self) -> Box<dyn ChangeToken>;

    // Provided method
    fn name(&self) -> Option<&str> { ... }
}

Used to fetch ChangeToken used for tracking options changes.

Required Methods

fn token(&self) -> Box<dyn ChangeToken>

Creates and returns a ChangeToken which can be used to register a change notification callback.

Provided Methods

fn name(&self) -> Option<&str>

Gets the name of the option instance being changed, if any.

Implementors

impl<T: Value> OptionsChangeTokenSource<T> for ConfigurationChangeTokenSource<T>

Available on crate feature cfg only.