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System.Collections.Generic.IReadOnlySet<T> is internal in System.Collections.Immutable NuGet package

area-System.Collections

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#116920 In dotnet/runtime;

· AgWillo opened on Jun 23, 2025

Revert "Revert "? true : false" removal (#70631)"

area-System.Collections

community-contributionIndicates that the PR has been added by a community memberIndicates that the PR has been added by a community member

Status: Open (in progress).

dotnet/runtimenumber 116528

#116528 In dotnet/runtime;

· xtqqczze opened on Jun 11, 2025

[Perf] Linux/x64: 3 Regressions on 6/5/2025 3:43:16 AM +00:00

arch-x64

area-System.Collections

os-linuxLinux OS (any supported distro)Linux OS (any supported distro)

runtime-coreclrspecific to the CoreCLR runtimespecific to the CoreCLR runtime

tenet-performancePerformance related issuePerformance related issue

tenet-performance-benchmarksIssue from performance benchmarkIssue from performance benchmark

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#116485 In dotnet/runtime;

· performanceautofiler opened on Jun 10, 2025

[Perf] Linux/x64: 1 Regression on 6/4/2025 3:33:05 AM +00:00

arch-x64

area-System.Collections

os-linuxLinux OS (any supported distro)Linux OS (any supported distro)

runtime-coreclrspecific to the CoreCLR runtimespecific to the CoreCLR runtime

tenet-performancePerformance related issuePerformance related issue

tenet-performance-benchmarksIssue from performance benchmarkIssue from performance benchmark

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#116489 In dotnet/runtime;

· performanceautofiler opened on Jun 10, 2025

Update BitArray.CopyTo to use the xplat intrinsics

area-System.Collections

help wanted[up-for-grabs] Good issue for external contributors[up-for-grabs] Good issue for external contributors

Status: Open.

#116079 In dotnet/runtime;

· tannergooding opened on May 28, 2025

[API Proposal]: Add MaybeNullIfNull attribute

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-System.Collections

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#115990 In dotnet/runtime;

· voroninp opened on May 26, 2025

[API Proposal]: EqualityComparer.Create from selecting a key property

api-ready-for-reviewAPI is ready for review, it is NOT ready for implementationAPI is ready for review, it is NOT ready for implementation

area-System.Collections

Status: Open.

#115797 In dotnet/runtime;

· weitzhandler opened on May 20, 2025

 ·  

Future

[API Proposal]: ReadOnlySpan constructors for generic collections

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-System.Collections

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#115662 In dotnet/runtime;

· masonwheeler opened on May 16, 2025

[API Proposal]: Sort() on OrderedDictionary

api-suggestionEarly API idea and discussion, it is NOT ready for implementationEarly API idea and discussion, it is NOT ready for implementation

area-System.Collections

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#115127 In dotnet/runtime;

· jhudsoncedaron opened on Apr 28, 2025

ConcurrentBag.WorkStealingQueue.LocalPush() crash due to OverflowException

area-System.Collections

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#114817 In dotnet/runtime;

· antiduh opened on Apr 18, 2025

Allow removing items from ImmutableDictionary.Builder while enumerating it

area-System.Collections

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#114788 In dotnet/runtime;

· tmat opened on Apr 17, 2025

[API proposal] Add optimized SortedArray [renamed to BinarySortedList] (I can't create own tools with high performance)

area-System.Collections

tenet-performancePerformance related issuePerformance related issue

untriagedNew issue has not been triaged by the area ownerNew issue has not been triaged by the area owner

Status: Open.

#114647 In dotnet/runtime;

· RioMcBoo opened on Apr 14, 2025