| 95 |
|
* <p>A ConcurrentHashMap can be used as scalable frequency map (a |
| 96 |
|
* form of histogram or multiset) by using {@link |
| 97 |
|
* java.util.concurrent.atomic.LongAdder} values and initializing via |
| 98 |
< |
* {@link #computeIfAbsent}. For example, to add a count to a {@code |
| 99 |
< |
* ConcurrentHashMap<String,LongAdder> freqs}, you can use {@code |
| 100 |
< |
* freqs.computeIfAbsent(k -> new LongAdder()).increment();} |
| 98 |
> |
* {@link #computeIfAbsent computeIfAbsent}. For example, to add a count |
| 99 |
> |
* to a {@code ConcurrentHashMap<String,LongAdder> freqs}, you can use |
| 100 |
> |
* {@code freqs.computeIfAbsent(k -> new LongAdder()).increment();} |
| 101 |
|
* |
| 102 |
|
* <p>This class and its views and iterators implement all of the |
| 103 |
|
* <em>optional</em> methods of the {@link Map} and {@link Iterator} |
