feat:furion rbac搭建

Yi.Furion.Rbac/Yi.Framework.Infrastructure/Helper/DistinctHelper.cs

@@ -0,0 +1,42 @@
+using System;
+using System.Collections.Generic;
+using System.Diagnostics.CodeAnalysis;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Yi.Framework.Infrastructure.Helper
+{
+    public class Compare<T, C> : IEqualityComparer<T>
+    {
+        private Func<T, C> _getField;
+        public Compare(Func<T, C> getfield)
+        {
+            _getField = getfield;
+        }
+        public bool Equals(T? x, T? y)
+        {
+            return EqualityComparer<C>.Default.Equals(_getField(x!), _getField(y!));
+        }
+
+        public int GetHashCode(T obj)
+        {
+            return EqualityComparer<C>.Default.GetHashCode(_getField(obj)!);
+        }
+    }
+    public static class DistinctHelper
+    {
+        /// <summary>
+        /// 自定义Distinct扩展方法
+        /// </summary>
+        /// <typeparam name="T">要去重的对象类</typeparam>
+        /// <typeparam name="C">自定义去重的字段类型</typeparam>
+        /// <param name="source">要去重的对象</param>
+        /// <param name="getfield">获取自定义去重字段的委托</param>
+        /// <returns></returns>
+        public static IEnumerable<T> DistinctNew<T, C>(this IEnumerable<T> source, Func<T, C> getfield)
+        {
+            return source.Distinct(new Compare<T, C>(getfield));
+        }
+    }
+}