public final class DoubleLongHashMap.KeysContainer extends java.lang.Object implements DoubleLookupContainer
Constructor and Description |
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KeysContainer() |
Modifier and Type | Method and Description |
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void |
clear()
Removes all elements from this collection.
|
boolean |
contains(double e)
Lookup a given element in the container.
|
<T extends DoublePredicate> |
forEach(T predicate)
Applies a
predicate to container elements as long, as the
predicate returns true . |
<T extends DoubleProcedure> |
forEach(T procedure)
Applies a
procedure to all container elements. |
boolean |
isEmpty()
Shortcut for
size() == 0 . |
java.util.Iterator<DoubleCursor> |
iterator()
Returns an iterator to a cursor traversing the collection.
|
void |
release()
Removes all elements from the collection and additionally releases any
internal buffers.
|
int |
removeAll(double e)
Removes all occurrences of
e from this collection. |
int |
removeAll(DoubleLookupContainer c)
Default implementation uses a predicate for removal.
|
int |
removeAll(DoublePredicate predicate)
Removes all elements in this collection for which the given predicate
returns
true . |
int |
retainAll(DoubleLookupContainer c)
Default implementation uses a predicate for retaining.
|
int |
retainAll(DoublePredicate predicate)
Default implementation redirects to
DoubleCollection.removeAll(DoublePredicate) and
negates the predicate. |
int |
size()
Return the current number of elements in this container.
|
double[] |
toArray()
Default implementation of copying to an array.
|
java.lang.String |
toString()
Convert the contents of this container to a human-friendly string.
|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
toArray
public boolean contains(double e)
DoubleContainer
contains
in interface DoubleContainer
contains
in interface DoubleLookupContainer
true
if this container has an element equal to
e
.public <T extends DoubleProcedure> T forEach(T procedure)
DoubleContainer
procedure
to all container elements. Returns the
argument (any subclass of DoubleProcedure
. 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 DoubleContainer
public <T extends DoublePredicate> T forEach(T predicate)
DoubleContainer
predicate
to container elements as long, as the
predicate returns true
. The iteration is interrupted
otherwise.forEach
in interface DoubleContainer
public boolean isEmpty()
DoubleContainer
size() == 0
.isEmpty
in interface DoubleContainer
public java.util.Iterator<DoubleCursor> iterator()
DoubleContainer
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 (DoubleCursor<double> c : container) { System.out.println("index=" + c.index + " value=" + c.value); }
iterator
in interface DoubleContainer
iterator
in interface java.lang.Iterable<DoubleCursor>
public int size()
DoubleContainer
O(n)
time, although
implementing classes should try to maintain the current size and return in
constant time.size
in interface DoubleContainer
public void clear()
DoubleCollection
clear
in interface DoubleCollection
DoubleCollection.release()
public void release()
DoubleCollection
DoubleCollection.clear()
should be a better alternative since it'll avoid
reallocation.release
in interface DoubleCollection
DoubleCollection.clear()
public int removeAll(DoublePredicate predicate)
DoubleCollection
true
.removeAll
in interface DoubleCollection
public int removeAll(double e)
DoubleCollection
e
from this collection.removeAll
in interface DoubleCollection
e
- Element to be removed from this collection, if present.public int removeAll(DoubleLookupContainer c)
removeAll
in interface DoubleCollection
public int retainAll(DoubleLookupContainer c)
retainAll
in interface DoubleCollection
public int retainAll(DoublePredicate predicate)
DoubleCollection.removeAll(DoublePredicate)
and
negates the predicate.retainAll
in interface DoubleCollection
public double[] toArray()
toArray
in interface DoubleContainer
public java.lang.String toString()
toString
in class java.lang.Object
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