Struct PropertyValue 

pub struct PropertyValue<T, V> { /* private fields */ }

A value of a property and the object it was read from (PropertyValue<TObject, TValue>).

Upstream’s value of a path that a null step interrupts is the default value of TValue, with a flag (UnobtainableValue); here it is None (value).

Implementations

impl<T, V> PropertyValue<T, V>

pub fn new(sender: T, value: V) -> Self

The value of a property of sender (PropertyValue(TObject sender, TValue value)).

pub fn unobtainable(sender: T) -> Self

A value that could not be read, as a step of the path was null (PropertyValue(TObject sender)).

pub fn sender(&self) -> &T

The object the value was read from (Sender).

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

The value (Value); None when it could not be read.

pub fn into_value(self) -> Option<V>

The value, giving up the rest.

pub fn is_unobtainable(&self) -> bool

Whether the value could not be read, as a step of the path was null (UnobtainableValue).

Trait Implementations

impl<T: Clone, V: Clone> Clone for PropertyValue<T, V>

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug, V: Debug> Debug for PropertyValue<T, V>

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

Formats the value using the given formatter.

impl<T: Display, V: Debug> Display for PropertyValue<T, V>

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

ToString: the sender and the value in parentheses.

impl<T: PartialEq, V: PartialEq> PartialEq for PropertyValue<T, V>

fn eq(&self, other: &Self) -> bool

Equals: two values that could not be read are equal whatever their senders, as are two null values upstream; otherwise the senders and the values are compared.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.