Struct OptionNum 

pub struct OptionNum<L>(/* private fields */);

A number or undetermined.

Implementations

impl<L: LengthNum> OptionNum<L>

pub fn to_hashable(&self) -> OptionNum<L::Hashable>

Convert to a hashable value.

pub fn none() -> Self

New undetermined value.

pub fn some(v: L) -> Self

New number.

pub fn zero() -> Self

New zero value.

pub fn is_none(&self) -> bool

Return true for undetermined value.

pub fn is_some(&self) -> bool

Return true for number.

pub fn val(&self) -> Option<L>

Convert to a number with Option.

pub fn unwrap_or(self, rhs: L) -> L

Unwrap to a number, default to rhs.

pub fn or(self, rhs: Self) -> Self

If self is undetermined, return rhs.

pub fn or_zero(self) -> L

Unwrap to a number, default to zero.

pub fn map(self, f: impl FnOnce(L) -> L) -> Self

Map the number.

Trait Implementations

impl<L: LengthNum> Add<L> for OptionNum<L>

type Output = OptionNum<L>

The resulting type after applying the + operator.

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

Performs the + operation.

impl<L: LengthNum> Add for OptionNum<L>

type Output = OptionNum<L>

The resulting type after applying the + operator.

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

Performs the + operation.

impl<L: Clone> Clone for OptionNum<L>

fn clone(&self) -> OptionNum<L>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<L: Debug> Debug for OptionNum<L>

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

Formats the value using the given formatter.

impl<L: Hash> Hash for OptionNum<L>

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl<L: LengthNum> Mul<f32> for OptionNum<L>

type Output = OptionNum<L>

The resulting type after applying the * operator.

fn mul(self, rhs: f32) -> Self

Performs the * operation.

impl<L: LengthNum> Mul<i32> for OptionNum<L>

type Output = OptionNum<L>

The resulting type after applying the * operator.

fn mul(self, rhs: i32) -> Self

Performs the * operation.

impl<L: PartialEq> PartialEq for OptionNum<L>

fn eq(&self, other: &OptionNum<L>) -> 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<L: LengthNum> Sub<L> for OptionNum<L>

type Output = OptionNum<L>

The resulting type after applying the - operator.

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

Performs the - operation.

impl<L: LengthNum> Sub for OptionNum<L>

type Output = OptionNum<L>

The resulting type after applying the - operator.

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

Performs the - operation.

impl<L: Copy> Copy for OptionNum<L>

impl<L: Eq> Eq for OptionNum<L>

impl<L> StructuralPartialEq for OptionNum<L>