NCalcSync.signed
4.4.0-alpha
See the version list below for details.
dotnet add package NCalcSync.signed --version 4.4.0-alpha
NuGet\Install-Package NCalcSync.signed -Version 4.4.0-alpha
<PackageReference Include="NCalcSync.signed" Version="4.4.0-alpha" />
paket add NCalcSync.signed --version 4.4.0-alpha
#r "nuget: NCalcSync.signed, 4.4.0-alpha"
// Install NCalcSync.signed as a Cake Addin #addin nuget:?package=NCalcSync.signed&version=4.4.0-alpha&prerelease // Install NCalcSync.signed as a Cake Tool #tool nuget:?package=NCalcSync.signed&version=4.4.0-alpha&prerelease
NCalc
NCalc is a mathematical expression evaluator in .NET. NCalc can parse any expression and evaluate the result, including static or dynamic parameters and custom functions.
Docs
Need help or want to learn more? Check our docs.
Project Description
NCalc is a .NET library for evaluating mathematical expressions. It can handle various types of expressions, including those with static or dynamic parameters, as well as custom functions. It is supported by any target framework that accommodates .NET Standard 2.0.
For additional information on the technique we used to create this framework please read this article: https://www.codeproject.com/Articles/18880/State-of-the-Art-Expression-Evaluation.
[!IMPORTANT] If you need help, please open an issue and include the expression to help us better understand the problem. Providing this information will aid in resolving the issue effectively.
Getting Started
If you want to evaluate simple expressions:
dotnet add package NCalcSync
Want async support at event handlers?
dotnet add package NCalcAsync
Dependency Injection? We got you covered:
dotnet add package NCalc.DependencyInjection
Functionalities
Simple Expressions
var expression = new Expression("2 + 3 * 5");
Debug.Assert(17 == expression.Evaluate());
Evaluates .NET data types
Debug.Assert(123456 == new Expression("123456").Evaluate()); // integers
Debug.Assert(new DateTime(2001, 01, 01) == new Expression("#01/01/2001#").Evaluate()); // date and times
Debug.Assert(123.456 == new Expression("123.456").Evaluate()); // floating point numbers
Debug.Assert(true == new Expression("true").Evaluate()); // booleans
Debug.Assert("azerty" == new Expression("'azerty'").Evaluate()); // strings
Handles mathematical functional from System.Math
Debug.Assert(0 == new Expression("Sin(0)").Evaluate());
Debug.Assert(2 == new Expression("Sqrt(4)").Evaluate());
Debug.Assert(0 == new Expression("Tan(0)").Evaluate());
Evaluates custom functions
var expression = new Expression("SecretOperation(3, 6)");
expression.EvaluateFunction += delegate(string name, FunctionArgs args)
{
if (name == "SecretOperation")
args.Result = (int)args.Parameters[0].Evaluate() + (int)args.Parameters[1].Evaluate();
};
Debug.Assert(9 == expression.Evaluate());
Handles unicode characters
Debug.Assert("経済協力開発機構" == new Expression("'経済協力開発機構'").Evaluate());
Debug.Assert("Hello" == new Expression(@"'\u0048\u0065\u006C\u006C\u006F'").Evaluate());
Debug.Assert("だ" == new Expression(@"'\u3060'").Evaluate());
Debug.Assert("\u0100" == new Expression(@"'\u0100'").Evaluate());
Define parameters, even dynamic or expressions
var expression = new Expression("Round(Pow([Pi], 2) + Pow([Pi2], 2) + [X], 2)");
expression.Parameters["Pi2"] = new Expression("Pi * [Pi]");
expression.Parameters["X"] = 10;
expression.EvaluateParameter += delegate(string name, ParameterArgs args)
{
if (name == "Pi")
args.Result = 3.14;
};
Debug.Assert(117.07 == expression.Evaluate());
Caching and Serializing
This example uses Newtonsoft.Json.
Serializing
var parsedExpression = LogicalExpressionFactory.Create(expression, ExpressionOptions.NoCache);
var serialized = JsonConvert.SerializeObject(parsedExpression, new JsonSerializerSettings
{
TypeNameHandling = TypeNameHandling.All // We need this to allow serializing abstract classes
});
Deserializing
var deserialized = JsonConvert.DeserializeObject<LogicalExpression>(serialized, new JsonSerializerSettings
{
TypeNameHandling = TypeNameHandling.All
});
Expression.CacheEnabled = false; // We cannot use NCalc's built in cache at the same time.
var expression = new Expression(deserialized);
expression.Parameters = new Dictionary<string, object> {
{"waterlevel", inputValue}
};
var result = expression.Evaluate();
You can also use our Memory Cache plugin.
Lambda Expressions
var expression = new Expression("1 + 2");
Func<int> function = expression.ToLambda<int>();
Debug.Assert(function()); //3
Related projects
Parlot
Fast and lightweight parser creation tools by Sébastien Ros that NCalc uses at its parser.
PanoramicData.NCalcExtensions
Extension functions for NCalc to handle many general functions,
including string functions, switch, if, in, typeOf, cast etc.
Developed by David, Dan and all at Panoramic Data.
Jint
JavaScript Interpreter for .NET by Sébastien Ros, the author of NCalc library.
Runs on any modern .NET platform as it supports .NET Standard 2.0 and .NET 4.6.1 targets (and up).
NCalcJS
A TypeScript/JavaScript port of NCalc.
NCalc101
NCalc 101 is a simple web application that allows you to try out the NCalc expression evaluator, developed by Panoramic Data.
JJMasterData.NCalc
Plugin of NCalc used to evaluate JJMasterData expressions. JJMasterData is a runtime form generator from database metadata.
NCalc versioning
The project uses Nerdbank.GitVersioning tool to manage versions.
Each library build can be traced back to the original git commit.
Preparing and publishing a new release
- Make sure that
nbgv
dotnet CLI tool is installed and is up-to-date - Run
nbgv prepare-release
to create a stable branch for the upcoming release, i.e. release/v1.0 - Switch to the release branch:
git checkout release/v1.0
- Execute unit tests, update the README, release notes in csproj file, etc. Commit and push your changes.
- Run
dotnet pack -c Release
and check that it builds Nuget packages with the right version number. - Run
nbgv tag release/v1.0
to tag the last commit on the release branch with your current version number, i.e. v1.0.7. - Push tags as suggested by nbgv tool:
git push origin v1.0.7
- Go to GitHub project page and create a release out of the last tag v1.0.7.
- Verify that github workflow for publishing the nuget package has completed.
- Switch back to master and merge the release branch.
Discord Server
If you want to talk with us, get support or just get the latest NCalc news, come to our discord server.
Product | Versions Compatible and additional computed target framework versions. |
---|---|
.NET | net5.0 was computed. net5.0-windows was computed. net6.0 is compatible. 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 is compatible. 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 | netcoreapp2.0 was computed. netcoreapp2.1 was computed. netcoreapp2.2 was computed. netcoreapp3.0 was computed. netcoreapp3.1 was computed. |
.NET Standard | netstandard2.0 is compatible. netstandard2.1 was computed. |
.NET Framework | net461 was computed. net462 is compatible. 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 | tizen40 was computed. tizen60 was computed. |
Xamarin.iOS | xamarinios was computed. |
Xamarin.Mac | xamarinmac was computed. |
Xamarin.TVOS | xamarintvos was computed. |
Xamarin.WatchOS | xamarinwatchos was computed. |
-
.NETFramework 4.6.2
- NCalc.Core (>= 4.4.0-alpha)
-
.NETStandard 2.0
- NCalc.Core (>= 4.4.0-alpha)
-
net6.0
- NCalc.Core (>= 4.4.0-alpha)
-
net8.0
- NCalc.Core (>= 4.4.0-alpha)
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 |
---|---|---|
5.3.1 | 104 | 12/18/2024 |
5.3.0 | 379 | 11/16/2024 |
5.2.11 | 689 | 10/25/2024 |
5.2.10 | 1,459 | 10/7/2024 |
5.2.9 | 173 | 9/26/2024 |
5.2.8 | 718 | 9/3/2024 |
5.2.7 | 112 | 9/2/2024 |
5.2.6 | 362 | 8/30/2024 |
5.2.5 | 164 | 8/29/2024 |
5.2.4 | 127 | 8/28/2024 |
5.2.3 | 157 | 8/23/2024 |
5.2.2 | 224 | 8/9/2024 |
5.2.1 | 181 | 8/6/2024 |
5.2.0 | 172 | 7/26/2024 |
5.1.0 | 209 | 7/12/2024 |
5.0.0 | 240 | 7/1/2024 |
4.4.0-alpha | 84 | 6/10/2024 |
4.3.3 | 699 | 6/14/2024 |
4.3.2 | 126 | 6/12/2024 |
4.3.1 | 95 | 6/11/2024 |
4.3.0 | 103 | 6/10/2024 |
4.2.1 | 109 | 6/7/2024 |
4.2.0 | 471 | 6/4/2024 |
4.1.0 | 200 | 5/26/2024 |
4.0.0 | 243 | 5/21/2024 |
3.13.1 | 165 | 5/16/2024 |
3.13.0 | 129 | 5/6/2024 |
3.12.0 | 112 | 5/6/2024 |