[Java] Class ListWithDefault<T>

public final class ListWithDefault
extends Object

Method Detail

public boolean add(T t)

public void add(int i, T t)

public boolean addAll(Collection<? extends T> ts)

public boolean addAll(int i, Collection<? extends T> ts)

public void clear()

public boolean contains(Object o)

public boolean containsAll(Collection<?> objects)

@Override public boolean equals(Object obj)

public T get(int index)

Returns the element at the given index but grows the list if needed. If the requested index is greater than or equal to size(), the list will grow to the new size and a default value calculated using the initClosure will be used to populate the missing value and returned.

If lazyDefaultValues is true any gaps when growing the list are filled with nulls. Subsequent attempts to retrieve items from the list from those gap index values will, upon finding null, call the initClosure to populate the list for the given list value. Hence, when in this mode, nulls cannot be stored in this list. If lazyDefaultValues is false any gaps when growing the list are filled eagerly by calling the initClosure for all gap indexes during list growth. No calls to initClosure are made except during list growth and it is ok to store null values in the list when in this mode.

This implementation breaks the contract of List.get as it a) possibly modifies the underlying list and b) does NOT throw an IndexOutOfBoundsException when index < 0 || index >= size().

Parameters:

index - an index (might be greater or equal to size(), or smaller than 0)

Returns:

the value at the given index or the default value

public T getAt(int index)

Overwrites subscript operator handling by redirecting to get(int).

Parameters:

index - an index (might be greater or equal to size(), or smaller than 0)

Returns:

the value at the given index or the default value

public List<T> getDelegate()

public Closure getInitClosure()

@Override public int hashCode()

public int indexOf(Object o)

public boolean isEmpty()

public boolean isLazyDefaultValues()

public Iterator<T> iterator()

public int lastIndexOf(Object o)

public ListIterator<T> listIterator()

public ListIterator<T> listIterator(int i)

<T> public static List<T> newInstance(List<T> items, boolean lazyDefaultValues, Closure initClosure)

public boolean remove(Object o)

public T remove(int i)

public boolean removeAll(Collection<?> objects)

public boolean retainAll(Collection<?> objects)

public T set(int i, T t)

public int size()

public List<T> subList(int fromIndex, int toIndex)

Returns a view of a portion of this list. This method returns a list with the same lazy list settings as the original list.

Parameters:

fromIndex - low endpoint of the subList (inclusive)

toIndex - upper endpoint of the subList (exclusive)

Returns:

a view of a specified range within this list, keeping all lazy list settings

public Object[] toArray()

<T> public T[] toArray(T[] ts)