/// <summary>
/// 创建小于等于运算表达式
/// </summary>
/// <param name="left">左操作数</param>
/// <param name="value">值</param>
public static Expression LessEqual(this Expression left, object value)
{
return(left.LessEqual(Lambda.Constant(left, value)));
}
/// <summary>
/// 获取lambda表达式的值
/// </summary>
/// <typeparam name="T">对象类型</typeparam>
public static object Value <T>(this Expression <Func <T, bool> > expression)
{
return(Lambda.GetValue(expression));
}
/// <summary>
/// 创建大于运算表达式
/// </summary>
/// <param name="left">左操作数</param>
/// <param name="value">值</param>
public static Expression Greater(this Expression left, object value)
{
return(left.Greater(Lambda.Constant(left, value)));
}