GitHub - mootable/hashmap: Providing fast at scale HashMap, LinkedHashMap, and Higher Order Functions to any iterable, such as Array, Map or Set. Tested, and Benchmarked, Issues & PRs welcomed.
![collections - Filter using Java Stream == > a HashMap of custom objects to a HashSet - Stack Overflow collections - Filter using Java Stream == > a HashMap of custom objects to a HashSet - Stack Overflow](https://i.stack.imgur.com/kDxzj.png)
collections - Filter using Java Stream == > a HashMap of custom objects to a HashSet - Stack Overflow
![What if Java Collections had eager methods for filter, map, flatMap? | by Donald Raab | Nov, 2023 | Medium What if Java Collections had eager methods for filter, map, flatMap? | by Donald Raab | Nov, 2023 | Medium](https://miro.medium.com/v2/resize:fit:2000/1*RaOoggW34QXYNqCmPkPtdQ.png)