BitCollections 1.0.1

Install-Package BitCollections -Version 1.0.1
dotnet add package BitCollections --version 1.0.1
<PackageReference Include="BitCollections" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add BitCollections --version 1.0.1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.
#r "nuget: BitCollections, 1.0.1"
#r directive can be used in F# Interactive, C# scripting and .NET Interactive. Copy this into the interactive tool or source code of the script to reference the package.
// Install BitCollections as a Cake Addin
#addin nuget:?package=BitCollections&version=1.0.1

// Install BitCollections as a Cake Tool
#tool nuget:?package=BitCollections&version=1.0.1
The NuGet Team does not provide support for this client. Please contact its maintainers for support.

Licensed under the MIT License NuGet


BitCollections is a library that provides efficient collections storing bit values. It provides two types:

  • BitSet: An immutable struct, allocation-free when small bit indices are stored.

  • BitArrayNeo: A mutable class, has a similar API with System.Collections.BitArray, its modification methods return whether the collection changed.

These two types can be converted and checked for equality against each other. Both implement IEnumerable<int>, returning the indices of their active bits.

Missing features

BitArrayNeo is not a drop-in replacement for BitArray. In particular, it is missing features like:

  • The LeftShift/RightShift methods
  • Some additional constructors (such as accepting an array of bytes or booleans)
  • SIMD acceleration

BitSet is missing some set-relational operators (such as IsSubsetOf) that might come in handy. They will be added in a future release.

NuGet packages (1)

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Package Downloads

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Version Downloads Last updated
1.0.1 403 1/26/2021
1.0.0 333 8/11/2020

Fix an enumeration bug on bit collections whose smallest element is at least 128.
Use consistent casing in the bit collections' ToString representation.
Update framework dependencies.