RangePermute 1.0.1

.NET Core 2.1 This package targets .NET Core 2.1. The package is compatible with this framework or higher. .NET Framework 4.0 This package targets .NET Framework 4.0. The package is compatible with this framework or higher. 
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

RangePermute

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]

Credits

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

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. 
.NET Core netcoreapp2.1 is compatible.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Framework net40 is compatible.  net403 was computed.  net45 is compatible.  net451 was computed.  net452 was computed.  net46 is compatible.  net461 was computed.  net462 was computed.  net463 was computed.  net47 was computed.  net471 was computed.  net472 was computed.  net48 was computed.  net481 was computed. 
Compatible target framework(s)
Included target framework(s) (in package)
Learn more about Target Frameworks and .NET Standard.

  • .NETCoreApp 2.1

    • No dependencies.

  • .NETFramework 4.0

    • No dependencies.

  • .NETFramework 4.5

    • No dependencies.

  • .NETFramework 4.6

    • No dependencies.

NuGet packages

This package is not used by any NuGet packages.

GitHub repositories

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Version Downloads Last updated
1.0.1 689 3/19/2019
1.0.0 1,055 2/23/2018

First release.