Issues

• TreeSet/TreeDictionary: assertion failure when removing from a collision node at the maximum tree depth

  apple/swift-collections#849 · Filter by author 0z5a opened on Nov 13, 2026

• UniqueDictionary.keys returns an address in a dead stack temporary, which gives wrong results and crashes in debug builds

  apple/swift-collections#841 · Filter by author Joseph-Cursio opened on Nov 6, 2026
  2

• Add folder Evolution

  enhancement
  apple/swift-collections#822 · Filter by author TofPlay opened on Nov 3, 2026

• [Containers] Prototype BorrowingSequence/Container operations

  apple/swift-collections#611 · Filter by author natecook1000 opened on Mar 26, 2026

• BloomFilter

  enhancement
  apple/swift-collections#518 · Filter by author iDmitriyy opened on Sep 19, 2025
  1

• Interval trees

  enhancement
  apple/swift-collections#511 · Filter by author dabrahams opened on Aug 27, 2025

• I need RangeDictionary

  enhancement
  apple/swift-collections#510 · Filter by author dabrahams opened on Aug 27, 2025

• BitArray/BitSet need a way to export the underlying bitmaps in some sensible format

  enhancement
  apple/swift-collections#489 · Filter by author lorentey opened on Jun 25, 2025
  2

• InlineOrHeap sequence

  enhancement
  apple/swift-collections#484 · Filter by author MahdiBM opened on Jun 16, 2025
  3

• Adding Self-returning overload of sorted() for OrderedDictionary and OrderedSet?

  api-redesignenhancement
  apple/swift-collections#477 · Filter by author marcomasser opened on May 20, 2025
  5

• NDArray

  enhancement
  apple/swift-collections#469 · Filter by author filip-sakel opened on May 9, 2025

• Naïve _update strategy could be suboptimal.

  bug
  apple/swift-collections#444 · Filter by author dabrahams opened on Dec 24, 2024
  1

• Rationale for storing level and offset in heap nodes?

  apple/swift-collections#443 · Filter by author dabrahams opened on Dec 24, 2024
  6

• Consider adding an indexed heap

  enhancement
  apple/swift-collections#442 · Filter by author dabrahams opened on Dec 24, 2024

• CMake multi-module shared library build does not build with -Wl,-z,defs and -Wl,--no-undefined,--no-allow-shlib-undefined on Linux

  bug
  apple/swift-collections#440 · Filter by author ADKaster opened on Dec 19, 2024
  3

• [CI] Detect source breaking changes

  enhancement
  apple/swift-collections#435 · Filter by author lorentey opened on Nov 18, 2024
  1

• [CI] Swift format hangs for 20mins

  bug
  apple/swift-collections#431 · Filter by author shahmishal opened on Oct 25, 2024

• [CI] Enable Shell check

  enhancement
  apple/swift-collections#430 · Filter by author shahmishal opened on Oct 25, 2024

• [CI] Enable documentation check

  enhancement
  apple/swift-collections#429 · Filter by author shahmishal opened on Oct 25, 2024

• [CI] Support python flake8

  enhancement
  apple/swift-collections#428 · Filter by author shahmishal opened on Oct 25, 2024

• Please Add Support for Multiset

  enhancement
  apple/swift-collections#374 · Filter by author singhalrishi27 opened on May 8, 2024
  1

• [1.1] Randomized test failure on CI

  bug
  apple/swift-collections#369 · Filter by author lorentey opened on Apr 23, 2024

• BitArray's bitwise operations should allow operating on slices

  BitCollectionsenhancement
  apple/swift-collections#350 · Filter by author lorentey opened on Jan 9, 2024 · Future
  2

• OrderedSet append(contentsOf:) with insertion check result/results

  enhancement
  apple/swift-collections#329 · Filter by author LePips opened on Nov 19, 2023

• OrderedDictionary updateValue autoclosure for insertion index

  enhancement
  apple/swift-collections#312 · Filter by author andrews05 opened on Aug 29, 2023