CoreCLR-NCalc.Unity 2.2.0

dotnet add package CoreCLR-NCalc.Unity --version 2.2.0                
NuGet\Install-Package CoreCLR-NCalc.Unity -Version 2.2.0                
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="CoreCLR-NCalc.Unity" Version="2.2.0" />                
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add CoreCLR-NCalc.Unity --version 2.2.0                
#r "nuget: CoreCLR-NCalc.Unity, 2.2.0"                
#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 CoreCLR-NCalc.Unity as a Cake Addin
#addin nuget:?package=CoreCLR-NCalc.Unity&version=2.2.0

// Install CoreCLR-NCalc.Unity as a Cake Tool
#tool nuget:?package=CoreCLR-NCalc.Unity&version=2.2.0                

NCalc

Build status NuGet NuGet

⚠️ This repository is currently only passively maintained. If there are fully fledged PRs, I will occasional merge those in and publish new versions. If you would like to become a maintainer and work on some of the open issues, please reply here https://github.com/sklose/NCalc2/issues/61

A clone of NCalc from http://ncalc.codeplex.com/ with the following changes:

  • added support for CoreCLR (.NET Standard 1.3+)
  • embedded portable version of Antlr (no extra library/dependency required)
  • added compilation of expressions to actual CLR lambdas

Installation

Simply install the package via NuGet

PM> Install-Package CoreCLR-NCalc

Creating Lambdas

Simple Expressions

var expr = new Expression("1 + 2");
Func<int> f = expr.ToLambda<int>();
Console.WriteLine(f()); // will print 3

Expressions with Functions and Parameters

class ExpressionContext
{
  public int Param1 { get; set; }
  public string Param2 { get; set; }
  
  public int Foo(int a, int b)
  {
    return a + b;
  }
}

var expr = new Expression("Foo([Param1], 2) = 4 && [Param2] = 'test'");
Func<ExpressionContext, bool> f = expr.ToLambda<ExpressionContext, bool>();

var context = new ExpressionContext { Param1 = 2, Param2 = "test" };
Console.WriteLine(f(context)); // will print True

Performance Comparison

The measurements were done during CI runs on AppVeyor and fluctuate a lot in between runs, but the speedup is consistently in the thousands of percent range. The speedup measured on actual hardware was even higher (between 10,000% and 35,000%).

Formula Description Expression Evaluations / sec Lambda Evaluations / sec Speedup
(4 * 12 / 7) + ((9 * 2) % 8) Simple Arithmetics 474,247.87 32,691,490.41 6,793.33%
5 * 2 = 2 * 5 && (1 / 3.0) * 3 = 1 Simple Arithmetics 276,226.31 93,222,709.05 33,648.67%
[Param1] * 7 + [Param2] Constant Values 707,493.27 21,766,101.47 2,976.51%
[Param1] * 7 + [Param2] Dynamic Values 582,832.10 21,400,445.13 3,571.80%
Foo([Param1] * 7, [Param2]) Dynamic Values and Function Call 594,259.69 17,209,334.34 2,795.93%
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 netcoreapp1.0 was computed.  netcoreapp1.1 was computed.  netcoreapp2.0 was computed.  netcoreapp2.1 was computed.  netcoreapp2.2 was computed.  netcoreapp3.0 was computed.  netcoreapp3.1 was computed. 
.NET Standard netstandard1.3 is compatible.  netstandard1.4 was computed.  netstandard1.5 was computed.  netstandard1.6 was computed.  netstandard2.0 is compatible.  netstandard2.1 was computed. 
.NET Framework net45 is compatible.  net451 was computed.  net452 was computed.  net46 was computed.  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 tizen30 was computed.  tizen40 was computed.  tizen60 was computed. 
Universal Windows Platform uap was computed.  uap10.0 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.

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
2.2.0 1,979 7/6/2022