Struct Weight 

pub struct Weight { /* private fields */ }

Weight / mass (always non-negative).

Used for rider weight, elevator load, and weight capacity.

let w = Weight::from(75.0);
assert_eq!(w.value(), 75.0);
assert_eq!(format!("{w}"), "75.00kg");

Implementations

impl Weight

pub const ZERO: Self

Zero weight.

pub fn try_new(value: f64) -> Result<Self, UnitError>

Fallible constructor — returns Err for NaN, infinity, or negative values.

Errors

Returns UnitError if value is not finite or is negative.

assert!(Weight::try_new(75.0).is_ok());
assert!(Weight::try_new(f64::NAN).is_err());
assert!(Weight::try_new(-1.0).is_err());

pub const fn value(self) -> f64

The inner value.

Trait Implementations

impl Add for Weight

type Output = Weight

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self

Performs the + operation.

impl AddAssign for Weight

fn add_assign(&mut self, rhs: Self)

Performs the += operation.

impl Clone for Weight

fn clone(&self) -> Weight

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Weight

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for Weight

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Display for Weight

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

Formats the value using the given formatter.

impl From<f64> for Weight

fn from(value: f64) -> Self

Converts to this type from the input type.

impl PartialEq for Weight

fn eq(&self, other: &Weight) -> 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 PartialOrd for Weight

fn partial_cmp(&self, other: &Weight) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Serialize for Weight

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Sub for Weight

type Output = Weight

The resulting type after applying the - operator.

fn sub(self, rhs: Self) -> Self

Performs the - operation.

impl SubAssign for Weight

fn sub_assign(&mut self, rhs: Self)

Performs the -= operation.

impl Copy for Weight

impl StructuralPartialEq for Weight