FastExpressionCompiler 3.0.0-preview-05

FastExpressionCompiler is 10-40x times faster than Expression.Compile()

Showing the top 20 packages that depend on FastExpressionCompiler.

Packages Downloads
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
48
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
49
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
50
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
51
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
52
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
53
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
54
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
56
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
57
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
61
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
62
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
96
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
100
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
120
RulesEngine
Rules Engine is a package for abstracting business logic/rules/policies out of the system. This works in a very simple way by giving you an ability to put your rules in a store outside the core logic of the system thus ensuring that any change in rules doesn't affect the core system.
472

## v3.0.0 - Major feature release The version contains a lot of fixes and improvements and hopefully as-little-as-possible breaking changes. ### **FastExpressionCompiler** and **FastExpressionCompiler.LightExpression** - Performance and memory consumption is improved, especially for the expressions with the closure and for expressions with the nested lambdas. - Filled the gaps in the expressions support. - Many fixes in the IL emit. - Adds `ToCSharpString()` to output the compile-able C# code described by the expression (tries hard). - Adds `ToExpressionString()` to output the valid expression construction syntax, so given an expression object you'll get e.g. `Lambda(New(...))`. - Adds optional `enum CompilerFlags { Default, NoInvocationLambdaInlining, EnableDelegateDebugInfo}` parameter for the compilation - `EnableDelegateDebugInfo` adds the diagnostic info into the compiled delegate including its source Expression and C# code. Can be used as following: ```cs var f = e.CompileFast(true, CompilerFlags.EnableDelegateDebugInfo); var di = f.Target as IDelegateDebugInfo; Assert.IsNotNull(di.Expression); Assert.IsNotNull(di.ExpressionString); Assert.IsNotNull(di.CSharpString); ``` ### **FastExpressionCompiler.LightExpression** - Now includes the `ExpressionVisitor`. - Improves the compatibility (the drop-in replacement) between `FastExpressionCompiler.LightExpression.Expression` and `System.Linq.Expression`. - Decreasing the memory consumed by the created expressions, plus implementing the `IArgumentProvider` and `IParameterProvider` for some of the expressions. ### The full list of fixes [Milestone v3.0.0](https://github.com/dadhi/FastExpressionCompiler/milestone/19)

.NET Framework 4.5

.NET Standard 2.0

Version Downloads Last updated
5.3.0 12 06/12/2025
5.2.0 15 05/15/2025
5.2.0-preview-02 20 04/28/2025
5.2.0-preview-01 19 04/28/2025
5.1.1 24 04/04/2025
5.1.0 28 04/01/2025
5.0.3 22 03/30/2025
5.0.2 40 02/11/2025
5.0.1 23 12/25/2024
5.0.0 21 11/28/2024
4.2.2 25 10/19/2024
4.2.1 51 07/23/2024
4.2.0 49 07/23/2024
4.1.0 57 07/23/2024
4.0.2 58 07/23/2024
4.0.1 116 02/05/2024
4.0.0 41 07/23/2024
3.4.0-preview-01 43 07/23/2024
3.3.4 56 07/23/2024
3.3.3 97 02/04/2024
3.3.2 48 07/23/2024
3.3.1 48 07/23/2024
3.3.0 51 07/23/2024
3.2.2 52 07/23/2024
3.2.1 51 05/29/2024
3.2.0 45 07/23/2024
3.1.0 50 07/23/2024
3.1.0-preview-03 49 07/23/2024
3.1.0-preview-02 57 07/23/2024
3.1.0-preview-01 46 07/23/2024
3.0.6-preview-01 45 07/23/2024
3.0.5 48 07/23/2024
3.0.4 51 07/23/2024
3.0.3 48 07/23/2024
3.0.2 53 07/23/2024
3.0.1 48 07/23/2024
3.0.0 48 07/23/2024
3.0.0-preview-07 47 07/20/2024
3.0.0-preview-06 47 07/23/2024
3.0.0-preview-05 49 07/23/2024
3.0.0-preview-04 49 07/23/2024
3.0.0-preview-03 49 07/23/2024
3.0.0-preview-02 51 07/23/2024
3.0.0-preview-01 48 07/23/2024
2.0.0 49 07/23/2024
2.0.0-preview-03 41 07/23/2024
2.0.0-preview-02 47 07/23/2024
2.0.0-preview-01 51 07/21/2024
1.10.1 44 07/23/2024
1.10.0 44 07/23/2024
1.9.0 52 07/23/2024
1.8.0 48 07/23/2024
1.7.2 51 07/23/2024
1.7.1 49 07/23/2024
1.7.0 42 07/23/2024
1.6.0 48 07/23/2024
1.5.0 46 07/23/2024
1.4.0 50 07/23/2024
1.3.0 41 07/23/2024
1.2.2 49 07/23/2024
1.2.1 54 07/23/2024
1.2.0 48 07/23/2024
1.1.1 42 07/23/2024
1.1.0 47 07/23/2024
1.0.1 46 07/23/2024
1.0.0 50 07/23/2024
1.0.0-preview-04 50 07/23/2024
1.0.0-preview-03 52 07/23/2024
1.0.0-preview-02 48 07/23/2024
1.0.0-preview-01 48 07/23/2024