49 lines
2.5 KiB
Markdown
49 lines
2.5 KiB
Markdown
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# Flee (Supports Net6.0, Net5.0, Netstandard2.1, Netstandard2.0)
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Fast Lightweight Expression Evaluator.
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Convert this project vb.net to c#.
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## Project Description
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Flee is an expression parser and evaluator for the .NET framework. It allows you to compute the value of string expressions such as sqrt(a^2 + b^2) at runtime. It uses a custom compiler, strongly-typed expression language, and lightweight codegen to compile expressions directly to IL. This means that expression evaluation is extremely fast and efficient.
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## Features
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* Fast and efficient expression evaluation
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* Small, lightweight library
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* Compiles expressions to IL using a custom compiler, lightweight codegen, and the DynamicMethod class
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* Expressions (and the IL generated for them) are garbage-collected when no longer used
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* Does not create any dynamic assemblies that stay in memory
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* Backed by a comprehensive suite of unit tests
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* Culture-sensitive decimal point
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* Fine-grained control of what types an expression can use
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* Supports all arithmetic operations including the power (^) operator
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* Supports string, char, boolean, and floating-point literals
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* Supports 32/64 bit, signed/unsigned, and hex integer literals
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* Features a true conditional operator
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* Supports short-circuited logical operations
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* Supports arithmetic, comparison, implicit, and explicit overloaded operators
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* Variables of any type can be dynamically defined and used in expressions
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* CalculationEngine: Reference other expressions in an expression and recalculate in natural order
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* Expressions can index arrays and collections, access fields and properties, and call functions on various types
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* Generated IL can be saved to an assembly and viewed with a disassembler
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### Installing Flee
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You should install [Flee with NuGet](https://www.nuget.org/packages/Flee):
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Install-Package Flee
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Or via the .NET Core command line interface:
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dotnet add package Flee
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## NuGet Packages
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| Name | NuGet |
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| :--- | :--- |
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| [Flee](https://www.nuget.org/packages/Flee) | [](https://www.nuget.org/packages/Flee)
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## More information
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* [Examples](https://github.com/mparlak/Flee/wiki/Examples) to learn how to create and evaluate expressions.
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## License
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Flee is licensed under the LGPL. This means that as long as you dynamically link (ie: add a reference) to the officially released assemblies, you can use it in commercial and non-commercial applications.
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