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Math-Expression-Evaluator
Advanced tools
A C# library for parsing mathematical expressions with support for parentheses and variables.
Entity Framework Extensions and Dapper Plus are major sponsors and are proud to contribute to the development of Math Expression Evaluator.
Math Expression Evaluator is a library for evaluating simple mathematical expressions. It supports simple expressions such as 2.5+5.9
, 17.89-2.47+7.16
, 5/2/2+1.5*3+4.58
, expressions with parentheses (((9-6/2)*2-4)/2-6-1)/(2+24/(2+4))
and expressions with variables:
var a = 6;
var b = 4.32m;
var c = 24.15m;
Assert.That(engine.Evaluate("(((9-a/2)*2-b)/2-a-1)/(2+c/(2+4))", new { a, b, c}),
Is.EqualTo((((9 - a / 2) * 2 - b) / 2 - a - 1) / (2 + c / (2 + 4))));
It is also possible to specify variables by using named arguments like this:
dynamic dynamicEngine = new ExpressionEvaluator();
var a = 6;
var b = 4.5m;
var c = 2.6m;
Assert.That(dynamicEngine.Evaluate("(c+b)*a", a: 6, b: 4.5, c: 2.6),
Is.EqualTo((c + b) * a));
dotnet add package Math-Expression-Evaluator
From https://stackoverflow.com/questions/50722680/methods-for-dynamically-creating-an-array-in-c-sharp
DavidG
Can't decide if this library is evil, genius or evil genius...
xanatos
That library is using high level magic... Very high level :-)
The class is dynamic and is handling in a dynamic way the use of the method... fascinating
FAQs
A C# library for parsing mathematical expressions with support for parentheses and variables.
We found that math-expression-evaluator demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 1 open source maintainer collaborating on the project.
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Socket MCP brings real-time security checks to AI-generated code, helping developers catch risky dependencies before they enter the codebase.
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