class Program
{
static void Main(string[] args)
{
IEnumerable<View> views = new List<View>
{
new View() {CoordSys = new Plane(){Org=new Origin(){x=1,Vector=0}}, PartNums = new List<int> {1,2,3}}
,new View() {CoordSys = new Plane(){Org=new Origin(){x=2,Vector=0}}, PartNums = new List<int> {4,5,6}}
,new View() {CoordSys = new Plane(){Org=new Origin(){x=3,Vector=0}}, PartNums = new List<int> {13,14,15}}
,new View() {CoordSys = new Plane(){Org=new Origin(){x=2,Vector=0}}, PartNums = new List<int> {7,8,9}}
,new View() {CoordSys = new Plane(){Org=new Origin(){x=2,Vector=0}}, PartNums = new List<int> {10,11,12}}
,new View() {CoordSys = new Plane(){Org=new Origin(){x=1,Vector=0}}, PartNums = new List<int> {16,17,18}}
};
IEnumerable<View> viewsByGroup = views.GroupBy(v => v, new ViewComparer());
// loop to process groups
Console.ReadLine();
}
}
class ViewComparer : IEqualityComparer<View>
{
public bool Equals(View x, View y)
{
return x.CoordSys.Org.x == y.CoordSys.Org.x
&& x.CoordSys.Org.Vector == y.CoordSys.Org.Vector;
}
public int GetHashCode(View obj)
{
return obj.CoordSys.GetHashCode();
}
}
如何编写groupBy比较器?我想要CoordSys平等的团体。这是我第一次尝试写一个自定义groupBy。这个示例代码有很多ints来试图简化它。实际的CoordSys更复杂。如何编写自定义Linq组合
感谢那些回复,不幸的是我需要写我的比较器,因为我的CoordSys属性比我在示例中显示的int复杂得多。我试图简化可能误导你的问题。我的CoordSys实际上包括一架飞机,一架起飞机和一架飞机。所有这些都需要在我的最终比较解决方案中考虑。谢谢 – DustyB