Package org.agrona.collections
Class Long2LongHashMap.KeySet
- java.lang.Object
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- java.util.AbstractCollection<E>
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- java.util.AbstractSet<java.lang.Long>
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- org.agrona.collections.Long2LongHashMap.KeySet
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- All Implemented Interfaces:
java.lang.Iterable<java.lang.Long>
,java.util.Collection<java.lang.Long>
,java.util.Set<java.lang.Long>
- Enclosing class:
- Long2LongHashMap
public final class Long2LongHashMap.KeySet extends java.util.AbstractSet<java.lang.Long>
Set of keys which supports optional cached iterators to avoid allocation.
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Field Summary
Fields Modifier and Type Field Description private Long2LongHashMap.KeyIterator
keyIterator
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Constructor Summary
Constructors Constructor Description KeySet()
Create a new instance.
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Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description void
clear()
boolean
contains(long key)
Checks if key is contained in the map without boxing.boolean
contains(java.lang.Object o)
boolean
isEmpty()
Long2LongHashMap.KeyIterator
iterator()
boolean
removeIfLong(java.util.function.LongPredicate filter)
Removes all the elements of this collection that satisfy the given predicate.int
size()
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Methods inherited from class java.util.AbstractCollection
add, addAll, containsAll, remove, retainAll, toArray, toArray, toString
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Field Detail
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keyIterator
private final Long2LongHashMap.KeyIterator keyIterator
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Method Detail
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iterator
public Long2LongHashMap.KeyIterator iterator()
- Specified by:
iterator
in interfacejava.util.Collection<java.lang.Long>
- Specified by:
iterator
in interfacejava.lang.Iterable<java.lang.Long>
- Specified by:
iterator
in interfacejava.util.Set<java.lang.Long>
- Specified by:
iterator
in classjava.util.AbstractCollection<java.lang.Long>
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size
public int size()
- Specified by:
size
in interfacejava.util.Collection<java.lang.Long>
- Specified by:
size
in interfacejava.util.Set<java.lang.Long>
- Specified by:
size
in classjava.util.AbstractCollection<java.lang.Long>
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isEmpty
public boolean isEmpty()
- Specified by:
isEmpty
in interfacejava.util.Collection<java.lang.Long>
- Specified by:
isEmpty
in interfacejava.util.Set<java.lang.Long>
- Overrides:
isEmpty
in classjava.util.AbstractCollection<java.lang.Long>
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clear
public void clear()
- Specified by:
clear
in interfacejava.util.Collection<java.lang.Long>
- Specified by:
clear
in interfacejava.util.Set<java.lang.Long>
- Overrides:
clear
in classjava.util.AbstractCollection<java.lang.Long>
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contains
public boolean contains(java.lang.Object o)
- Specified by:
contains
in interfacejava.util.Collection<java.lang.Long>
- Specified by:
contains
in interfacejava.util.Set<java.lang.Long>
- Overrides:
contains
in classjava.util.AbstractCollection<java.lang.Long>
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contains
public boolean contains(long key)
Checks if key is contained in the map without boxing.- Parameters:
key
- to check.- Returns:
true
if key is contained in this map.
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removeIfLong
public boolean removeIfLong(java.util.function.LongPredicate filter)
Removes all the elements of this collection that satisfy the given predicate.NB: Renamed from removeIf to avoid overloading on parameter types of lambda expression, which doesn't play well with type inference in lambda expressions.
- Parameters:
filter
- a predicate to apply.- Returns:
true
if at least one key was removed.
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