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java.lang.Object com.carrotsearch.hppc.DoubleIntOpenHashMap.KeysContainer
public final class DoubleIntOpenHashMap.KeysContainer
A view of the keys inside this hash map.
Constructor Summary | |
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DoubleIntOpenHashMap.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(double 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<DoubleCursor> |
iterator()
Returns an iterator to a cursor traversing the collection. |
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int |
removeAll(DoubleLookupContainer c)
Default implementation uses a predicate for removal. |
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int |
removeAll(DoublePredicate predicate)
Removes all elements in this collection for which the given predicate returns true . |
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int |
removeAllOccurrences(double e)
Removes all occurrences of e from this collection. |
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int |
retainAll(DoubleLookupContainer c)
Default implementation uses a predicate for retaining. |
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int |
retainAll(DoublePredicate predicate)
Default implementation redirects to DoubleCollection.removeAll(DoublePredicate)
and negates the predicate. |
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int |
size()
Return the current number of elements in this container. |
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double[] |
toArray()
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.DoubleContainer |
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toArray |
Constructor Detail |
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public DoubleIntOpenHashMap.KeysContainer()
Method Detail |
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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
public int removeAll(DoublePredicate predicate)
DoubleCollection
true
.
removeAll
in interface DoubleCollection
public int removeAllOccurrences(double e)
DoubleCollection
e
from this collection.
removeAllOccurrences
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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