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java.lang.Object com.carrotsearch.hppc.ObjectIntOpenHashMap.KeysContainer
public final class ObjectIntOpenHashMap.KeysContainer
A view of the keys inside this hash map.
Constructor Summary | |
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ObjectIntOpenHashMap.KeysContainer()
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Method Summary | ||
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void |
clear()
Removes all elements from this collection. |
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boolean |
contains(KType e)
Lookup a given element in the container. |
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forEach(T predicate)
Applies a predicate to container elements as long, as the predicate
returns true . |
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forEach(T procedure)
Applies a procedure to all container elements. |
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boolean |
isEmpty()
Shortcut for size() == 0 . |
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java.util.Iterator<ObjectCursor<KType>> |
iterator()
Returns an iterator to a cursor traversing the collection. |
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int |
removeAll(ObjectLookupContainer<? extends KType> c)
Default implementation uses a predicate for removal. |
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int |
removeAll(ObjectPredicate<? super KType> predicate)
Removes all elements in this collection for which the given predicate returns true . |
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int |
removeAllOccurrences(KType e)
Removes all occurrences of e from this collection. |
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int |
retainAll(ObjectLookupContainer<? extends KType> c)
Default implementation uses a predicate for retaining. |
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int |
retainAll(ObjectPredicate<? super KType> predicate)
Default implementation redirects to ObjectCollection.removeAll(ObjectPredicate)
and negates the predicate. |
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int |
size()
Return the current number of elements in this container. |
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java.lang.Object[] |
toArray()
Copies all elements from this container to an Object array. |
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KType[] |
toArray(java.lang.Class<? super KType> clazz)
Default implementation of copying to an array. |
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java.lang.String |
toString()
Convert the contents of this container to a human-friendly string. |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait |
Methods inherited from interface com.carrotsearch.hppc.ObjectContainer |
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toArray, toArray |
Constructor Detail |
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public ObjectIntOpenHashMap.KeysContainer()
Method Detail |
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public boolean contains(KType e)
ObjectContainer
contains
in interface ObjectContainer<KType>
contains
in interface ObjectLookupContainer<KType>
true
if this container has an element
equal to e
.public <T extends ObjectProcedure<? super KType>> T forEach(T procedure)
ObjectContainer
procedure
to all container elements. Returns the argument (any
subclass of ObjectProcedure
. This lets the caller to call methods of the argument
by chaining the call (even if the argument is an anonymous type) to retrieve computed values,
for example (IntContainer):
int count = container.forEach(new IntProcedure() { int count; // this is a field declaration in an anonymous class. public void apply(int value) { count++; }}).count;
forEach
in interface ObjectContainer<KType>
public <T extends ObjectPredicate<? super KType>> T forEach(T predicate)
ObjectContainer
predicate
to container elements as long, as the predicate
returns true
. The iteration is interrupted otherwise.
forEach
in interface ObjectContainer<KType>
public boolean isEmpty()
ObjectContainer
size() == 0
.
isEmpty
in interface ObjectContainer<KType>
public java.util.Iterator<ObjectCursor<KType>> iterator()
ObjectContainer
The iterator is implemented as a
cursor and it returns the same cursor instance on every call to
Iterator.next()
(to avoid boxing of primitive types). To read the current
list's value (or index in the list) use the cursor's public fields. An example is
shown below.
for (ObjectCursor<KType> c : container) { System.out.println("index=" + c.index + " value=" + c.value); }
iterator
in interface ObjectContainer<KType>
iterator
in interface java.lang.Iterable<ObjectCursor<KType>>
public int size()
ObjectContainer
O(n)
time, although implementing classes
should try to maintain the current size and return in constant time.
size
in interface ObjectContainer<KType>
public void clear()
ObjectCollection
clear
in interface ObjectCollection<KType>
public int removeAll(ObjectPredicate<? super KType> predicate)
ObjectCollection
true
.
removeAll
in interface ObjectCollection<KType>
public int removeAllOccurrences(KType e)
ObjectCollection
e
from this collection.
removeAllOccurrences
in interface ObjectCollection<KType>
e
- Element to be removed from this collection, if present.
public int removeAll(ObjectLookupContainer<? extends KType> c)
removeAll
in interface ObjectCollection<KType>
public int retainAll(ObjectLookupContainer<? extends KType> c)
retainAll
in interface ObjectCollection<KType>
public int retainAll(ObjectPredicate<? super KType> predicate)
ObjectCollection.removeAll(ObjectPredicate)
and negates the predicate.
retainAll
in interface ObjectCollection<KType>
public KType[] toArray(java.lang.Class<? super KType> clazz)
toArray
in interface ObjectContainer<KType>
public java.lang.Object[] toArray()
ObjectContainer
ObjectContainer.toArray(Class)
.
toArray
in interface ObjectContainer<KType>
ObjectContainer.toArray(Class)
public java.lang.String toString()
toString
in class java.lang.Object
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