public static <K, V> HashMap<K, V> fromMap(Equal<K> eq, Hash<K> h, java.util.Map<K, V> map) {
HashMap<K, V> m = hashMap(eq, h);
for (Map.Entry<K, V> e : map.entrySet()) {
m.set(e.getKey(), e.getValue());
}
return m;
}
/** Converts the Iterable to a HashMap */
public static <K, V> HashMap<K, V> iterableHashMap(
final Equal<K> equal, final Hash<K> hash, final Iterable<P2<K, V>> entries) {
final HashMap<K, V> map = new HashMap<>(equal, hash);
for (P2<K, V> entry : entries) {
map.set(entry._1(), entry._2());
}
return map;
}
public <A, B> HashMap<A, B> map(
F<K, A> keyFunction, F<V, B> valueFunction, Equal<A> equal, Hash<A> hash) {
final HashMap<A, B> hashMap = new HashMap<>(equal, hash);
for (K key : keys()) {
final A newKey = keyFunction.f(key);
final B newValue = valueFunction.f(get(key).some());
hashMap.set(newKey, newValue);
}
return hashMap;
}