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Library for working with C#/F# expressions (System.Linq.Expressions, Microsoft.FSharp.Quotations). Building expressions, converting C# expressions to F# expressions, active patterns for C# expressions, expression evaluation, ect.




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This is an article on how to build a basic expression evaluator. It can evaluate any numerical expression combined with trigonometric functions for now. Constants like e and pi are also supported.

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Expression Lab is a lightweight Windows application based on the .Net Framework 4.0 that allows you to test regular expression (.Net flavour) patterns with real time results displayed on your target data.

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Package evaler implements a simple floating point arithmetic expression evaluator.Evaler uses Dijkstra's Shunting Yard algorithm [1] to convert an infix expression to postfix/RPN format [2], then evaluates the RPN expression. The implementation is adapted from a Java implementation at [3]. The results are returned as a math/big *big.Rat.

re2j - linear time regular expression matching in Java

RE2 is a regular expression engine that runs in time linear in the size of the input. RE2/J is a port of RE2 to pure Java.Java's standard regular expression package, java.util.regex, and many other widely used regular expression packages such as PCRE, Perl and Python use a backtracking implementation strategy: when a pattern presents two alternatives such as a|b, the engine will try to match subpattern a first, and if that yields no match, it will reset the input stream and try to match b instead.

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Multi-platform regular expression (regex) creation. Highlights regex matches, and regex groups for quick regular expression creation. Save/load regular expression sessions. Create robust regex patterns on any major platform. Supports PCRE and wxRegEx.

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