Method fromCollection

src/redempt/redlib/misc/WeightedRandom.java:60–66

Creates a WeightedRandom from a collection @param collection The collection to convert @param converter The function to convert from the type in the collection to the type in the WeightedRandom @param weightGetter The function to get the weight of an element in the collection @param

(Collection<K> collection, Function<K, T> converter, ToDoubleFunction<K> weightGetter)

     * @return The populated WeightedRandom
     */
    public static <T, K> WeightedRandom<T> fromCollection(Collection<K> collection, Function<K, T> converter, ToDoubleFunction<K> weightGetter) {
        Map<T, Double> map = new HashMap<>();
        for (K element : collection) {
            map.put(converter.apply(element), weightGetter.applyAsDouble(element));
        }
        return fromDoubleMap(map);
    }

    /**
     * Creates a WeightedRandom using the map of weights