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();
}
}
如何編寫groupBy比較器?我想要CoordSys平等的團體。這是我第一次嘗試寫一個自定義groupBy。這個示例代碼有很多ints來試圖簡化它。實際的CoordSys更復雜。如何編寫自定義Linq組合
感謝那些回覆,不幸的是我需要寫我的比較器,因爲我的CoordSys屬性比我在示例中顯示的int複雜得多。我試圖簡化可能誤導你的問題。我的CoordSys實際上包括一架飛機,一架起飛機和一架飛機。所有這些都需要在我的最終比較解決方案中考慮。謝謝 – DustyB