Struct Weights 

pub struct Weights<const N: usize>(pub [i32; N]);

What a kind of player cares about each of a game’s N features, in the order of the game’s names.

Tuple Fields

0: [i32; N]

Implementations

impl<const N: usize> Weights<N>

pub fn from_named( names: &[&str; N], by_name: &BTreeMap<String, i32>, ) -> Result<Self, UnknownFeature>

The weights of by_name, put in the order of names. A feature by_name leaves out weighs 0.

Errors

UnknownFeature for the first name of by_name (in its order) that isn’t one of names.

pub fn score(&self, counts: &[i64; N]) -> i32

The sum of each count times its weight, clamped into i32: never a wrap. It allocates nothing.

pub fn get(&self, names: &[&str; N], name: &str) -> Option<i32>

The weight of the feature name among names, or None when it isn’t one of them.

Trait Implementations

impl<const N: usize> Clone for Weights<N>

fn clone(&self) -> Weights<N>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<const N: usize> Copy for Weights<N>

impl<const N: usize> Debug for Weights<N>

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

Formats the value using the given formatter.

impl<const N: usize> Eq for Weights<N>

impl<const N: usize> PartialEq for Weights<N>

fn eq(&self, other: &Weights<N>) -> bool

Equality operator ==.

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

Inequality operator !=.

impl<const N: usize> StructuralPartialEq for Weights<N>