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Bulk set and map operations lose or duplicate elements on hash collisions

bug

Status: Open.

Bug

#294 In Kotlin/kotlinx.collections.immutable;

· DmitryNekrasov opened on Jul 28, 2026

Enable the Power Assert plugin in tests after updating to Kotlin 2.4.20

1.0.0 stabilization

enhancement

Status: Open.

Feature

#270 In Kotlin/kotlinx.collections.immutable;

· DmitryNekrasov opened on Jun 25, 2026

·  

v1.0.0

Benchmark against other immutable collection libraries

1.0.0 stabilization

performance improvement

Status: Open.

Task

#269 In Kotlin/kotlinx.collections.immutable;

· DmitryNekrasov opened on Jun 25, 2026

·  

v1.0.0

Kotlin Collection Literals

enhancement

Status: Open.

Feature

#267 In Kotlin/kotlinx.collections.immutable;

· SimonMarquis opened on Jun 20, 2026

Add getOrPut equivilant to PersistentMap

Status: Open.

Feature

#228 In Kotlin/kotlinx.collections.immutable;

· rnett opened on Jun 27, 2025

Document performance/memory behaviour for PersistentX.Builder

Status: Open.

#224 In Kotlin/kotlinx.collections.immutable;

· kyay10 opened on May 24, 2025

A LISP-style PersistentLinkedList would be nice

Status: Open.

#203 In Kotlin/kotlinx.collections.immutable;

· sbohmann opened on Dec 8, 2024

Distinguish between ordered and unordered sets and maps (urgent; can only be implemented before beta releases)

Status: Open.

#197 In Kotlin/kotlinx.collections.immutable;

· Laxystem opened on Oct 30, 2024

adding and removing items from immutablelist

docDocumentation improvement taskDocumentation improvement task

Status: Open.

#189 In Kotlin/kotlinx.collections.immutable;

· fred-bowker opened on Aug 14, 2024

Road to Beta

Status: Open.

#185 In Kotlin/kotlinx.collections.immutable;

· qurbonzoda opened on Jun 6, 2024

Add explanation about persistent collection to doc

docDocumentation improvement taskDocumentation improvement task

Status: Open.

Task

#184 In Kotlin/kotlinx.collections.immutable;

· ayyubid opened on Jun 2, 2024

No orEmpty function for ImmutableList?

Status: Open.

#182 In Kotlin/kotlinx.collections.immutable;

· Abhimanyu14 opened on May 15, 2024