Issues

• Support sort operation for ArrayMap (by key)

  vigna/fastutil#380 · Filter by author MukjepScarlet opened on May 29, 2026

• OpenHash remove compaction revisit

  vigna/fastutil#377 · Filter by author frajt opened on Mar 11, 2026
  14

• Case insensitive string maps

  vigna/fastutil#376 · Filter by author solonovamax opened on Dec 25, 2025
  3

• Add JSpecify annotations

  vigna/fastutil#374 · Filter by author MukjepScarlet opened on Dec 17, 2025
  4

• Feature request: Object2IntMap.putAll(Object2IntMap) instead of Object2IntMap.putAll(Map<K, Integer>)

  vigna/fastutil#372 · Filter by author MukjepScarlet opened on Oct 29, 2025

• Feature Request: Object2DoubleMap.replaceAllDouble(), .computeIfPreset()

  vigna/fastutil#371 · Filter by author InI4 opened on Oct 28, 2025

• Generated Kotlin extensions for utility methods and operators

  vigna/fastutil#370 · Filter by author MukjepScarlet opened on Sep 20, 2025

• feature: Enum2xxx Maps

  vigna/fastutil#368 · Filter by author MukjepScarlet opened on Sep 19, 2025
  1

• Interest in "Optimal Bounds for Open Addressing Without Reordering"?

  vigna/fastutil#343 · Filter by author rdesgroppes opened on Mar 21, 2025
  1

• Feature request: Kotlin optimization

  vigna/fastutil#339 · Filter by author MukjepScarlet opened on Dec 5, 2024
  6

• {"",remove}{Last,First}$TYPE for Lists?

  vigna/fastutil#338 · Filter by author rionda opened on Nov 28, 2024
  3

• Primitive Comparator.comparing(keyExtractor)

  vigna/fastutil#312 · Filter by author barakugav opened on Jan 13, 2024
  1

• find-deps.sh doesn't work

  vigna/fastutil#298 · Filter by author kromar777 opened on Jun 27, 2023
  3

• putIfAbsent should replace a null value

  vigna/fastutil#280 · Filter by author ben-manes opened on Oct 16, 2022
  2

• Primitive type equivalent of Map#forEach is missing

  vigna/fastutil#279 · Filter by author markusheiden opened on Oct 15, 2022
  5

• Unmodifiable map wrappers to not shield from Entry.setValue()

  vigna/fastutil#244 · Filter by author vigna opened on Mar 18, 2021
  3

• 8.6.0

  vigna/fastutil#238 · Filter by author vigna opened on Feb 5, 2021
  5

• Consider upgrading to JUnit 5 (Do not need to migrate all tests at once)

  vigna/fastutil#233 · Filter by author techsy730 opened on Feb 1, 2021

• asString and asCharSequenceView for CharLists

  vigna/fastutil#224 · Filter by author techsy730 opened on Jan 19, 2021
  10

• Additional src folders?

  vigna/fastutil#213 · Filter by author techsy730 opened on Jan 3, 2021
  5

• [Feature Request] Have an optional tripwire bit to detect Boxing/Unboxing

  vigna/fastutil#192 · Filter by author techsy730 opened on Dec 18, 2020
  1

• [OPTIMIZATION] Objects from methods that return 3 or more possible runtime-types optimize very poorly

  vigna/fastutil#183 · Filter by author techsy730 opened on Dec 17, 2020
  12

• [Feature request] Contributor doc

  vigna/fastutil#175 · Filter by author Arthur-Milchior opened on Oct 28, 2020
  10

• Spliterators for Tree data structures

  vigna/fastutil#135 · Filter by author techsy730 opened on Aug 21, 2019
  6

• Implement counting sort for boolean and byte arrays

  vigna/fastutil#132 · Filter by author techsy730 opened on Jul 17, 2019
  5