RangePermute 1.0.1

.NET Core 2.1 .NET Framework 4.0
dotnet add package RangePermute --version 1.0.1
NuGet\Install-Package RangePermute -Version 1.0.1
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="RangePermute" Version="1.0.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add RangePermute --version 1.0.1
#r "nuget: RangePermute, 1.0.1"
#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.
// Install RangePermute as a Cake Addin
#addin nuget:?package=RangePermute&version=1.0.1

// Install RangePermute as a Cake Tool
#tool nuget:?package=RangePermute&version=1.0.1


Memory efficient psuedo-randomly permuted enumerator for C#/.NET to enumerate gigantic ranges.

Say you want to generate a random permutation of numbers in range [0-2^50), without duplicates. Naive approach to get decent pseudo-random permutations would need prohibitively large amount of memory. This library can generate such enumerations using constant memory, and is suitable for Linq-style consumption.

With UInt64, currently we can support 2^64. Can easily be modified to support range up-to 2^128. Internals are 128-bit already.

using RangePermute;
foreach(var idx in RangeEnumerable.Range(100000000))
    // do something with idx
    // idx will be between 0 (inclusive) and 100000000 (exlusive)

Relevant reading:

  • Luby, Michael, and Charles Rackoff. "How to Construct Pseudorandom Permutations from Pseudorandom Functions." SIAM Journal on Computing, vol. 17, no. 2, 1988, pp. 373–386.
  • Black, John, and Phillip Rogaway. "Ciphers with Arbitrary Finite Domains." The Cryptographers Track at the Rsa Conference, 2002. [http://web.cs.ucdavis.edu/~rogaway/papers/subset.pdf]


Pretty much a C# port of https://pypi.python.org/pypi/shuffled/ .

Product Versions
.NET net5.0 net5.0-windows net6.0 net6.0-android net6.0-ios net6.0-maccatalyst net6.0-macos net6.0-tvos net6.0-windows net7.0 net7.0-android net7.0-ios net7.0-maccatalyst net7.0-macos net7.0-tvos net7.0-windows
.NET Core netcoreapp2.1 netcoreapp2.2 netcoreapp3.0 netcoreapp3.1
.NET Framework net40 net403 net45 net451 net452 net46 net461 net462 net463 net47 net471 net472 net48 net481
Compatible target framework(s)
Additional computed target framework(s)
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  • .NETCoreApp 2.1

    • No dependencies.
  • .NETFramework 4.0

    • No dependencies.
  • .NETFramework 4.5

    • No dependencies.
  • .NETFramework 4.6

    • No dependencies.

NuGet packages

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Version Downloads Last updated
1.0.1 532 3/19/2019
1.0.0 893 2/23/2018

First release.