Struct Context 

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

Context passed to watchers containing the value and associated metadata.

Implementations

impl<T> Context<T>

pub const fn new(value: T, metadata: Metadata) -> Self

Creates a new context with the given value and metadata.

pub fn with<V: Clone + 'static>(self, value: V) -> Self

Adds additional metadata to this context.

pub fn into_value(self) -> T

Consumes the context and returns the inner value.

pub const fn value(&self) -> &T

Returns a reference to the inner value.

pub const fn value_mut(&mut self) -> &mut T

Returns a mutable reference to the inner value.

pub const fn metadata(&self) -> &Metadata

Returns a reference to the metadata.

pub const fn metadata_mut(&mut self) -> &mut Metadata

Returns a mutable reference to the metadata.

pub fn map<U, F: FnOnce(T) -> U>(self, f: F) -> Context<U>

Maps the inner value to a new value.

pub fn as_ref(&self) -> Context<&T>

Returns a new context with a reference to the inner value.

pub fn as_mut(&mut self) -> Context<&mut T>

Returns a new context with a mutable reference to the inner value.

pub fn as_deref(&self) -> Context<&T::Target>

where T: Deref,

Returns a new context with a reference to the dereferenced inner value.

pub fn as_deref_mut(&mut self) -> Context<&mut T::Target>

where T: DerefMut,

Returns a new context with a mutable reference to the dereferenced inner value.

Trait Implementations

impl<T: Clone> Clone for Context<T>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Context<T>

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

Formats the value using the given formatter.

impl<T> From<T> for Context<T>

fn from(value: T) -> Self

Converts to this type from the input type.