Struct Value 

pub struct Value<V, TS> { /* private fields */ }

Wraps a map value with a specified expiry TimeSource.

Implementations

impl<V, TS> Value<V, TS>

where V: Clone, TS: TimeSource,

pub fn new(value: V, lifetime: Duration) -> Self

Creates a new Value with the given inner value and lifetime as Duration.

The values expiry is calculated by adding the specified lifetime to the result of TS:now().

pub fn is_expired(&self) -> bool

Returns true when the specified expiry is after the current time.

pub fn is_expired_at(&self, at: &TS) -> bool

Returns true when the specified expiry is after the given time at.

pub fn expires(&self) -> &TS

Returns a reference to the values expiry TimeSource.

pub fn set_expiry(&mut self, lifetime: Duration)

Sets the expiry of the value to now plus the given lifetime.

pub fn add_expiry(&mut self, lifetime: Duration)

Adds the given duration to the values expiry.

pub fn value(&self) -> V

Returns a copy of the inner value.

pub fn value_ref(&self) -> &V

Returns a reference to the inner value.

pub fn value_checked(&self) -> Option<V>

Returns a copy of the inner value if the expiry has not yet exceeded.

pub fn value_ref_checked(&self) -> Option<&V>

Returns a reference to the inner value if the expiry has not yet exceeded.

Trait Implementations

impl<V: Clone, TS: Clone> Clone for Value<V, TS>

fn clone(&self) -> Value<V, TS>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<V: Debug, TS: Debug> Debug for Value<V, TS>

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

Formats the value using the given formatter.