DoubleLookupContainer

All Superinterfaces:

DoubleContainer, java.lang.Iterable<DoubleCursor>

All Known Implementing Classes:

DoubleByteHashMap.KeysContainer, DoubleCharHashMap.KeysContainer, DoubleDoubleHashMap.KeysContainer, DoubleFloatHashMap.KeysContainer, DoubleHashSet, DoubleIntHashMap.KeysContainer, DoubleLongHashMap.KeysContainer, DoubleObjectHashMap.KeysContainer, DoubleScatterSet, DoubleShortHashMap.KeysContainer
```
@Generated(date="2024-05-16T12:00:00+0000",
           value="KTypeLookupContainer.java")
public interface DoubleLookupContainer
extends DoubleContainer
```
Marker interface for containers that can check if they contain a given object in at least time O(log n) and ideally in amortized constant time O(1).

- Method Summary
  
  All Methods Instance Methods Abstract Methods
  Modifier and Type Method Description
  
  boolean contains(double e)
  Lookup a given element in the container.
  - Methods inherited from interface com.carrotsearch.hppc.DoubleContainer
    forEach, isEmpty, iterator, size, toArray
  - Methods inherited from interface java.lang.Iterable
    forEach, spliterator

- Method Detail
  - contains
```
boolean contains(double e)
```
    Description copied from interface: DoubleContainer
    
    Lookup a given element in the container. This operation has no speed guarantees (may be linear with respect to the size of this container).
    
    Specified by:
    
    contains in interface DoubleContainer
    
    Returns:
    
    Returns true if this container has an element equal to e.