Struct indicator::context::layer::cache::Previous

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

Wrapper for previous env context.

Implementations

impl Previous

pub fn backward<F>(&self, f: F)where F: FnMut(&Map),

Iterates over the previous context.

Methods from Deref<Target = Map>

pub fn get<T: Send + Sync + 'static>(&self) -> Option<&T>

Get a reference to a type from the Context.

pub fn is_empty(&self) -> bool

Check if the Context is empty.

pub fn len(&self) -> usize

Get the number of elements in the Context.

Trait Implementations

impl Debug for Previous

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

Formats the value using the given formatter.

impl Default for Previous

fn default() -> Previous

Returns the “default value” for a type.

impl Deref for Previous

type Target = Map

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.