public <KResult, VResult> MapArray<KResult, VResult> toMapArray(
BiFunction<K, V, KResult> key, BiFunction<K, V, VResult> value) {
MapArray<KResult, VResult> result = new MapArray<>();
for (Pair<K, V> pair : pairs)
result.add(key.apply(pair.key, pair.value), value.apply(pair.key, pair.value));
return result;
}
public static <Key, Value> MapArray<Key, Value> toMapArray(Map<Key, Value> map) {
MapArray<Key, Value> mapArray = new MapArray<>();
for (Map.Entry<Key, Value> e : map.entrySet()) mapArray.add(e.getKey(), e.getValue());
return mapArray;
}
public static <T> MapArray<Integer, T> toMapArray(Collection<T> collection) {
MapArray<Integer, T> mapArray = new MapArray<>();
int i = 0;
for (T t : collection) mapArray.add(i++, t);
return mapArray;
}
public MapArray(MapArray<K, V> mapArray) {
this();
addAll(mapArray.stream().collect(toList()));
}
public <VResult> MapArray<K, VResult> toMapArray(Function<V, VResult> value) {
MapArray<K, VResult> result = new MapArray<>();
for (Pair<K, V> pair : pairs) result.add(pair.key, value.apply(pair.value));
return result;
}