Trait nannou::rand::distributions::weighted::alias_method::Weight

pub trait Weight: SampleUniform + PartialOrd<Self> + Copy + Add<Self, Output = Self> + Sub<Self, Output = Self> + Mul<Self, Output = Self> + Div<Self, Output = Self> + AddAssign<Self> + SubAssign<Self> + MulAssign<Self> + DivAssign<Self> + Sum<Self> {
    const MAX: Self;
    const ZERO: Self;

    fn try_from_u32_lossy(n: u32) -> Option<Self>;

    fn sum(values: &[Self]) -> Self { ... }
}

Trait that must be implemented for weights, that are used with [WeightedIndex]. Currently no guarantees on the correctness of [WeightedIndex] are given for custom implementations of this trait.

Associated Constants

const MAX: Self

Maximum number representable by Self.

const ZERO: Self

Element of Self equivalent to 0.

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Required methods

fn try_from_u32_lossy(n: u32) -> Option<Self>

Produce an instance of Self from a u32 value, or return None if out of range. Loss of precision (where Self is a floating point type) is acceptable.

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Provided methods

fn sum(values: &[Self]) -> Self

Sums all values in slice values.

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Implementations on Foreign Types

impl Weight for u32

const MAX: u32

const ZERO: u32

fn try_from_u32_lossy(n: u32) -> Option<u32>

impl Weight for i16

const MAX: i16

const ZERO: i16

fn try_from_u32_lossy(n: u32) -> Option<i16>

impl Weight for i32

const MAX: i32

const ZERO: i32

fn try_from_u32_lossy(n: u32) -> Option<i32>

impl Weight for usize

const MAX: usize

const ZERO: usize

fn try_from_u32_lossy(n: u32) -> Option<usize>

impl Weight for i8

const MAX: i8

const ZERO: i8

fn try_from_u32_lossy(n: u32) -> Option<i8>

impl Weight for u128

const MAX: u128

const ZERO: u128

fn try_from_u32_lossy(n: u32) -> Option<u128>

impl Weight for f64

const MAX: f64

const ZERO: f64

fn try_from_u32_lossy(n: u32) -> Option<f64>

fn sum(values: &[f64]) -> f64

impl Weight for isize

const MAX: isize

const ZERO: isize

fn try_from_u32_lossy(n: u32) -> Option<isize>

impl Weight for f32

const MAX: f32

const ZERO: f32

fn try_from_u32_lossy(n: u32) -> Option<f32>

fn sum(values: &[f32]) -> f32

impl Weight for u16

const MAX: u16

const ZERO: u16

fn try_from_u32_lossy(n: u32) -> Option<u16>

impl Weight for u8

const MAX: u8

const ZERO: u8

fn try_from_u32_lossy(n: u32) -> Option<u8>

impl Weight for i128

const MAX: i128

const ZERO: i128

fn try_from_u32_lossy(n: u32) -> Option<i128>

impl Weight for i64

const MAX: i64

const ZERO: i64

fn try_from_u32_lossy(n: u32) -> Option<i64>

impl Weight for u64

const MAX: u64

const ZERO: u64

fn try_from_u32_lossy(n: u32) -> Option<u64>

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Implementors

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