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Line 166: === Java === The [[Java (programming language)\|Java programming language]] is not particularly functional. Despite this, the core JDK package java.util.concurrent includes CopyOnWriteArrayList and CopyOnWriteArraySet which are persistent structures, implemented using copy-on-write techniques. The usual concurrent map implementation in Java, ConcurrentHashMap, is not persistent, however. Fully persistent collections are available in third-party libraries,<ref>{{Cite web\|url=https://github.com/sigbla/sigbla-pds/\|title=Persistent (immutable) collections for Java and Kotlin\|website=github.com\|access-date=2023-12-13}}</ref>, or other JVM languages. === JavaScript ===

Persistent data structure: Difference between revisions