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pub struct Handle<L, S> { /* private fields */ }
Expand description

Allows reloading the state of an associated Layer.

Implementations

Replace the current layer with the provided new_layer.

Invokes a closure with a mutable reference to the current layer, allowing it to be modified in place.

Returns a clone of the layer’s current value if it still exists. Otherwise, if the subscriber has been dropped, returns None.

Invokes a closure with a borrowed reference to the current layer, returning the result (or an error if the subscriber no longer exists).

Trait Implementations

Returns a copy of the value. Read more

Performs copy-assignment from source. Read more

Formats the value using the given formatter. Read more

Auto Trait Implementations

Blanket Implementations

Gets the TypeId of self. Read more

Immutably borrows from an owned value. Read more

Mutably borrows from an owned value. Read more

Returns the argument unchanged.

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

The resulting type after obtaining ownership.

Creates owned data from borrowed data, usually by cloning. Read more

🔬 This is a nightly-only experimental API. (toowned_clone_into #41263)

Uses borrowed data to replace owned data, usually by cloning. Read more

The type returned in the event of a conversion error.

Performs the conversion.

The type returned in the event of a conversion error.

Performs the conversion.