RangeForeach.Sources 1.2.8

dotnet add package RangeForeach.Sources --version 1.2.8                
NuGet\Install-Package RangeForeach.Sources -Version 1.2.8                
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="RangeForeach.Sources" Version="1.2.8">
  <PrivateAssets>all</PrivateAssets>
  <IncludeAssets>runtime; build; native; contentfiles; analyzers</IncludeAssets>
</PackageReference>                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add RangeForeach.Sources --version 1.2.8                
#r "nuget: RangeForeach.Sources, 1.2.8"                
#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 RangeForeach.Sources as a Cake Addin
#addin nuget:?package=RangeForeach.Sources&version=1.2.8

// Install RangeForeach.Sources as a Cake Tool
#tool nuget:?package=RangeForeach.Sources&version=1.2.8                

C# Range-Foreach Syntax Extensions

Provides the range-foreach syntax for C# 9.0 or higher.

Supported frameworks:

  • .NET Framework >= 3.5
  • .NET Core >= 1.0
  • .NET Standard >= 1.0

Range-Foreach Syntax

Reference source files or the NuGet package to write foreach loops like this:

foreach (var index in 0..100)
{
    // loop body...
}

which is equivalent to the legacy for loop below:

for (int index = 0; index < 100; index++)
{
    // loop body...
}

TIPS: 0 can be omitted in range expressions, e.g. ..100 (equivalent to 0..100).

NOTE: Use ^ to represent negative numbers, e.g. ^100..0 (instead of -100..0).

Stepped Syntax

Use the Step method to write foreach loops like this:

foreach (var index in (99..^1).Step(-2))
{
    // loop body...
}

which is equivalent to the legacy for loop below:

for (int index = 99; index > -1; index -= 2)
{
    // loop body...
}

Dependency Type Polyfill

This syntax requires the System.Range type (and also the System.Index type). Considering that early frameworks do not provide this type, this project includes the polyfill source.

If a third party package that includes the System.Range type (such as IndexRange, etc.) is referenced, define the INDEX_RANGE_EXTERNAL constant in the project file to avoid duplicate definitions:

<DefineConstants>$(DefineConstants);INDEX_RANGE_EXTERNAL</DefineConstants>

Performance Benchmark

BenchmarkDotNet v0.13.10, Windows 11 (10.0.22631.2792/23H2/2023Update/SunValley3)
AMD Ryzen 7 5800H with Radeon Graphics, 1 CPU, 16 logical and 8 physical cores
.NET SDK 8.0.100
  [Host]     : .NET 8.0.0 (8.0.23.53103), X64 RyuJIT AVX2
  DefaultJob : .NET 8.0.0 (8.0.23.53103), X64 RyuJIT AVX2
Method LoopCount Mean StdDev Ratio Code Size
CounterFor 1 0.0037 ns 0.0032 ns ? 20 B
RangeForeach 1 0.0026 ns 0.0010 ns ? 39 B
SteppedRangeForeach 1 0.0051 ns 0.0022 ns ? 39 B
EnumerableRangeForeach 1 7.2937 ns 0.1077 ns ? 593 B
CounterFor 3 0.4622 ns 0.0033 ns 1.00 20 B
RangeForeach 3 0.4623 ns 0.0011 ns 1.00 39 B
SteppedRangeForeach 3 0.4639 ns 0.0034 ns 1.00 39 B
EnumerableRangeForeach 3 9.4142 ns 0.1430 ns 20.37 644 B
CounterFor 10 2.1077 ns 0.0098 ns 1.00 20 B
RangeForeach 10 2.1039 ns 0.0019 ns 1.00 39 B
SteppedRangeForeach 10 2.1064 ns 0.0055 ns 1.00 39 B
EnumerableRangeForeach 10 14.0306 ns 0.0623 ns 6.66 644 B
CounterFor 100 26.3959 ns 0.0289 ns 1.00 20 B
RangeForeach 100 27.8959 ns 0.0137 ns 1.06 39 B
SteppedRangeForeach 100 27.9739 ns 0.0267 ns 1.06 39 B
EnumerableRangeForeach 100 64.2927 ns 0.4154 ns 2.44 644 B
CounterFor 1000 230.8943 ns 0.1496 ns 1.00 20 B
RangeForeach 1000 235.6411 ns 0.1965 ns 1.02 39 B
SteppedRangeForeach 1000 235.9903 ns 0.3364 ns 1.02 39 B
EnumerableRangeForeach 1000 513.7996 ns 1.7926 ns 2.23 644 B
There are no supported framework assets in this package.

Learn more about Target Frameworks and .NET Standard.

This package has 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
1.2.8 222 2/8/2024
1.2.5 240 1/12/2024
1.2.0 233 12/6/2023
1.1.0 285 4/4/2023
1.0.1 259 3/12/2023
1.0.0 260 3/12/2023
0.9.0 303 3/8/2023
0.8.5 252 3/7/2023
0.8.1 327 3/5/2023
0.8.0 302 3/5/2023 0.8.0 is deprecated because it has critical bugs.
0.7.0 357 1/19/2023
0.6.0 303 12/31/2022
0.5.0 444 9/27/2022
0.4.0 467 7/20/2022
0.2.0 471 7/19/2022
0.1.1 544 7/5/2022
0.1.0 437 7/3/2022