Struct AreaKm2 

pub struct AreaKm2(/* private fields */);

A catchment area expressed in square kilometres.

Invariant: the wrapped value is always finite and non-negative.

Eq is intentionally not derived — deriving Eq on f32 is a Rust footgun because IEEE-754 NaN != NaN. The constructor ensures the value is finite, but the derive would still be misleading. Use PartialEq directly or compare via AreaKm2::get.

Implementations

impl AreaKm2

pub fn new(raw: f32) -> Result<Self, MeasureError>

Construct an AreaKm2 from a raw f32.

Errors

Condition	Error variant
raw is NaN or infinite	MeasureError::NonFiniteValue
raw < 0.0	MeasureError::NegativeValue

pub fn get(self) -> f32

Return the underlying f32 value.

Trait Implementations

impl Clone for AreaKm2

fn clone(&self) -> AreaKm2

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for AreaKm2

impl Debug for AreaKm2

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

Formats the value using the given formatter.

impl PartialEq for AreaKm2

fn eq(&self, other: &AreaKm2) -> 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 AreaKm2

fn partial_cmp(&self, other: &AreaKm2) -> 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 StructuralPartialEq for AreaKm2