Enum Reading 

pub enum Reading<T> {
    Value(T),
    Unavailable(&'static str),
}

A reading that may be a device-reported “no data” sentinel (§8.4).

Variants

Value(T)

Unavailable(&'static str)

Implementations

impl<T> Reading<T>

pub fn value(self) -> Option<T>

Trait Implementations

impl<T: Clone> Clone for Reading<T>

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

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T: Debug> Debug for Reading<T>

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

Formats the value using the given formatter.

impl<T: PartialEq> PartialEq for Reading<T>

fn eq(&self, other: &Reading<T>) -> bool

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl<T: Copy> Copy for Reading<T>

impl<T> StructuralPartialEq for Reading<T>