Struct Choices 

pub struct Choices<T> { /* private fields */ }

Struct to hold choices and pre-validated WeightedIndex The weights need to sum up close to 1.0 and will be re-normalized if they do so.

Implementations

impl<T> Choices<T>

pub fn new(items: Vec<T>, weights: &[f64]) -> Self

Validate and normalize weights, then create Choices struct

Panics

This will panic if the number of weights and number of items are not the same.

pub fn sample<R: RngCore>(&self, rng: &mut R) -> &T

Sample a choice based on the weights

Trait Implementations

impl<T: Debug> Debug for Choices<T>

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

Formats the value using the given formatter.