HLL.NET 1.0.2

There is a newer version of this package available.
See the version list below for details.

dotnet add package HLL.NET --version 1.0.2

NuGet\Install-Package HLL.NET -Version 1.0.2

This command is intended to be used within the Package Manager Console in Visual Studio, as it uses the NuGet module's version of Install-Package.

<PackageReference Include="HLL.NET" Version="1.0.2" />

For projects that support PackageReference, copy this XML node into the project file to reference the package.

<PackageVersion Include="HLL.NET" Version="1.0.2" />
                    

                            Directory.Packages.props

<PackageReference Include="HLL.NET" />
                    

                            Project file

For projects that support Central Package Management (CPM), copy this XML node into the solution Directory.Packages.props file to version the package.

paket add HLL.NET --version 1.0.2

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

#r "nuget: HLL.NET, 1.0.2"

#r directive can be used in F# Interactive and Polyglot Notebooks. Copy this into the interactive tool or source code of the script to reference the package.

#addin nuget:?package=HLL.NET&version=1.0.2
                    

                            Install as a Cake Addin

#tool nuget:?package=HLL.NET&version=1.0.2
                    

                            Install as a Cake Tool

The NuGet Team does not provide support for this client. Please contact its maintainers for support.

HLL.NET – HyperLogLog for .NET

A fast and memory-efficient implementation of the HyperLogLog algorithm in .NET for approximate cardinality estimation of large data sets.

🚀 Features

⚡ Efficient cardinality estimation with HyperLogLog algorithm
🧠 Built-in support for multiple types: string, int, Guid, and more via custom hashers
🔧 Easy to extend with your own IHasher<T> implementations for any data type
🧪 Optional multiple-run estimation for improved accuracy and reduced variance
🧱 Configurable precision (4–16) with built-in validation
💼 Fully compatible with .NET Standard for broad platform support

📦 Installation

dotnet add package HLL.NET

🧑‍💻 Usage

using HLL.NET;

var items = new List<string>();
for (int i = 0; i < 10_000; i++)
    items.Add($"user_{i}");

double estimate = HyperLogLog.EstimateWithMultipleRuns(items, runs: 5, precision: 14);

Console.WriteLine($"Estimated unique count: {estimate:F2}");

For more fine-grained control:

var hll = new HyperLogLog<string>(precision: 14);

hll.Add("apple");
hll.Add("banana");
hll.Add("apple");

double estimate = hll.Estimate();
Console.WriteLine($"Estimated: {estimate:F2}");

✅ Running Tests

dotnet test

Tests are located in the tests/HLL.NET.Tests/ project and cover various edge cases and expected behaviors.

🤝 Contributing

PRs and suggestions welcome! Please:

Fork the repo
Create a feature branch
Add tests if needed
Submit a PR 🚀

📄 License

Product	Compatible and additional computed target framework versions.
.NET	net5.0 was computed. net5.0-windows was computed. net6.0 was computed. net6.0-android was computed. net6.0-ios was computed. net6.0-maccatalyst was computed. net6.0-macos was computed. net6.0-tvos was computed. net6.0-windows was computed. net7.0 was computed. net7.0-android was computed. net7.0-ios was computed. net7.0-maccatalyst was computed. net7.0-macos was computed. net7.0-tvos was computed. net7.0-windows was computed. net8.0 was computed. net8.0-android was computed. net8.0-browser was computed. net8.0-ios was computed. net8.0-maccatalyst was computed. net8.0-macos was computed. net8.0-tvos was computed. net8.0-windows was computed. net9.0 was computed. net9.0-android was computed. net9.0-browser was computed. net9.0-ios was computed. net9.0-maccatalyst was computed. net9.0-macos was computed. net9.0-tvos was computed. net9.0-windows was computed. net10.0 was computed. net10.0-android was computed. net10.0-browser was computed. net10.0-ios was computed. net10.0-maccatalyst was computed. net10.0-macos was computed. net10.0-tvos was computed. net10.0-windows was computed.
.NET Core	netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed.
.NET Standard	netstandard2.0 is compatible. netstandard2.1 was computed.
.NET Framework	net461 was computed. net462 was computed. net463 was computed. net47 was computed. net471 was computed. net472 was computed. net48 was computed. net481 was computed.
MonoAndroid	monoandroid was computed.
MonoMac	monomac was computed.
MonoTouch	monotouch was computed.
Tizen	tizen40 was computed. tizen60 was computed.
Xamarin.iOS	xamarinios was computed.
Xamarin.Mac	xamarinmac was computed.
Xamarin.TVOS	xamarintvos was computed.
Xamarin.WatchOS	xamarinwatchos was computed.

Compatible target framework(s)

Included target framework(s) (in package)

Learn more about Target Frameworks and .NET Standard.

.NETStandard 2.0
- No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

This package is not used by any popular GitHub repositories.

Version	Downloads	Last Updated
1.0.5	77	6/27/2025
1.0.4	131	6/14/2025
1.0.3	131	6/14/2025
1.0.2	132	6/14/2025
1.0.1	264	6/11/2025
1.0.0	270	6/11/2025