HashSetModifiableDBIDs (ELKI: Environment for DeveLoping KDD-Applications Supported by Index-Structures)

All Superinterfaces:

DBIDs, HashSetDBIDs, ModifiableDBIDs, SetDBIDs

All Known Implementing Classes:

FastutilIntOpenHashSetModifiableDBIDs
```
public interface HashSetModifiableDBIDs
extends HashSetDBIDs, ModifiableDBIDs
```
Set-oriented implementation of a modifiable DBID collection.

Since:

0.4.0

Author:

Erich Schubert

Method Summary

All Methods Instance Methods Abstract Methods
Modifier and Type	Method	Description
`HashSetModifiableDBIDs`	`clear()`	Clear this collection.
`DBIDMIter`	`iter()`	Get a DBID iterator (a more efficient API).
`boolean`	`retainAll(DBIDs set)`	Retain all elements that also are in the second set.

Methods inherited from interface elki.database.ids.DBIDs
contains, forEach, isEmpty, size

Methods inherited from interface elki.database.ids.ModifiableDBIDs
add, addDBIDs, pop, remove, removeDBIDs

- Method Detail
  - retainAll
```
boolean retainAll(DBIDs set)
```
    Retain all elements that also are in the second set.
    
    Parameters:
    
    set - second set
    
    Returns:
    
    true when modified
  - clear
```
HashSetModifiableDBIDs clear()
```
    Description copied from interface: ModifiableDBIDs
    
    Clear this collection.
    
    Specified by:
    
    clear in interface ModifiableDBIDs
  - iter
```
DBIDMIter iter()
```
    Description copied from interface: DBIDs
    Get a DBID iterator (a more efficient API).
    Example:
    for(DBIDIter iter = ids.iter(); iter.valid(); iter.advance()) { NumberVector vec = relation.get(iter); // iter is a temporary object reference }
    Specified by:
    
    iter in interface DBIDs
    
    Specified by:
    
    iter in interface ModifiableDBIDs
    
    Returns:
    
    iterator