[−][src]Struct roulette::Roulette
An efficient implementation of roulette wheel selection. This can be used to simulate a loaded die.
Implementations
impl<T> Roulette<T>[src]
pub fn new(probabilities: Vec<(T, f64)>) -> Roulette<T>[src]
Creates a Roulette with the given probabilities for a set of elements.
Note that the probabilities don't have to sum to 1;
they will be normalized automatically.
Panics if the probabilities are all zero or if any are negative.
pub fn sample<R: Rng>(&self, rng: &mut R) -> &T[src]
Returns a random element; each element's chance of being returned
is proportional to the probability specified in the parameter
to Roulette::new.
Auto Trait Implementations
impl<T> RefUnwindSafe for Roulette<T> where
T: RefUnwindSafe,
T: RefUnwindSafe,
impl<T> Send for Roulette<T> where
T: Send,
T: Send,
impl<T> Sync for Roulette<T> where
T: Sync,
T: Sync,
impl<T> Unpin for Roulette<T> where
T: Unpin,
T: Unpin,
impl<T> UnwindSafe for Roulette<T> where
T: UnwindSafe,
T: UnwindSafe,
Blanket Implementations
impl<T> Any for T where
T: 'static + ?Sized, [src]
T: 'static + ?Sized,
impl<T> Borrow<T> for T where
T: ?Sized, [src]
T: ?Sized,
impl<T> BorrowMut<T> for T where
T: ?Sized, [src]
T: ?Sized,
pub fn borrow_mut(&mut self) -> &mut T[src]
impl<T> From<T> for T[src]
impl<T, U> Into<U> for T where
U: From<T>, [src]
U: From<T>,
impl<T, U> TryFrom<U> for T where
U: Into<T>, [src]
U: Into<T>,
type Error = Infallible
The type returned in the event of a conversion error.
pub fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>[src]
impl<T, U> TryInto<U> for T where
U: TryFrom<T>, [src]
U: TryFrom<T>,
type Error = <U as TryFrom<T>>::Error
The type returned in the event of a conversion error.
pub fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>[src]
impl<V, T> VZip<V> for T where
V: MultiLane<T>,
V: MultiLane<T>,