(高难度)new System.Windows.Point() { X = Math.Sin(a), Y = Math.Cos(a) }
也作一下装配脑袋的Expression习题一.习题http://www.cnblogs.com/Ninputer/archive/2009/08/28/expression_tree1.html二.参考http://msdn.microsoft.com/zh-cn/library/system.linq.expressions.expression.aspxhttp://msdn.microsof