ExpressionEvaluatorCs 1.1.1

.NET Framework 4.0
dotnet add package ExpressionEvaluatorCs --version 1.1.1
NuGet\Install-Package ExpressionEvaluatorCs -Version 1.1.1
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="ExpressionEvaluatorCs" Version="1.1.1" />
For projects that support PackageReference, copy this XML node into the project file to reference the package.
paket add ExpressionEvaluatorCs --version 1.1.1
#r "nuget: ExpressionEvaluatorCs, 1.1.1"
#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 ExpressionEvaluatorCs as a Cake Addin
#addin nuget:?package=ExpressionEvaluatorCs&version=1.1.1

// Install ExpressionEvaluatorCs as a Cake Tool
#tool nuget:?package=ExpressionEvaluatorCs&version=1.1.1

ExpressionEvaluator

Simple expression evaluator for C#

Getting Started

  1. Install via nuget: ExpressionEvaluatorCs https://www.nuget.org/packages/ExpressionEvaluatorCs/
  2. Sample code
// Returns 6
var result1 = ExpressionEvaluator.Evaluate("(1 + 2) * 2");

// Returns false
var result2 = ExpressionEvaluator.Evaluate("false and true");

For more samples, see ExpressionEvaluatorTest.cs

Why Use This Library?

  • Lightweight. Single DLL < 10kb and no third party library dependencies
  • Easy to get started and use
  • Customization options
  • Supports older .NET Framework versions

.NET Support

  • Current Release: .NET Framework 4
  • Future release: .NET Core (.NET Standard Library)

Expression Support

  • And
  • False
  • Not
  • Or
  • True

Operator Support

  • <
  • >
  • >=
  • <>
  • =
  • +
  • -
  • *
  • /
  • %

Options

Specify Return Type

Sample code

// Returns 6
int result1 = ExpressionEvaluator.Evaluate<int>("(1 + 2) * 2");

// Returns false
bool result2 = ExpressionEvaluator.Evaluate<bool>("false and true");

Specify Operator Mapping

Sample code

ExpressionEvaluator.SetOperatorMap(new Dictionary<string, string>
{
    {"and", "&&"},
    {"or", "||"},
    {"<>", "!=" },
    {"not", "!" },
    {"true", "1" },
    {"false", "0" }
});

// Returns false
bool result = ExpressionEvaluator.Evaluate<bool>("0 && !1");
ExpressionEvaluator.SetOperatorMap(new Dictionary<string, string>
{
    {"+", "plus"},
    {"*", "times"},
    {"/", "divideBy"},
});

// Returns 6
int result = ExpressionEvaluator.Evaluate<int>("(1 plus 2) times 2");
Product Compatible and additional computed target framework versions.
.NET Framework net40 is compatible.  net403 was computed.  net45 was computed.  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. 
Compatible target framework(s)
Additional computed target framework(s)
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
1.1.1 2,038 5/27/2020
1.1.0 366 5/14/2020
1.0.1 446 5/7/2020
1.0.0 412 5/7/2020

Initial release.