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FIX not expression #77

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FIX not expression #77

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26 changes: 11 additions & 15 deletions NExtends/Primitives/Expressions/Expression.extensions.cs
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Original file line number Diff line number Diff line change
@@ -1,21 +1,17 @@
using System;
using System.Linq;
using System.Linq.Expressions;

namespace NExtends.Primitives.Expressions
{
public static class ExpressionExtensions
{
/// <summary>
/// http://stackoverflow.com/questions/13705394/how-to-make-a-predicatebuilder-not
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expr"></param>
/// <returns></returns>
public static Expression<Func<T, bool>> Not<T>(this Expression<Func<T, bool>> expr)
{
return Expression.Lambda<Func<T, bool>>
(Expression.Not(Expression.Invoke(expr, expr.Parameters.Cast<Expression>())), expr.Parameters);
}
}
public static class ExpressionExtensions
{
/// <summary>
/// http://stackoverflow.com/questions/13705394/how-to-make-a-predicatebuilder-not
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="expr"></param>
/// <returns></returns>
public static Expression<Func<T, bool>> Not<T>(this Expression<Func<T, bool>> expression)
=> Expression.Lambda<Func<T, bool>>(Expression.Not(expression.Body), expression.Parameters);
}
}