标签:hash 递归遍历 name 去重 stat his val new return
list 去重扩展:
public static IEnumerable<TSource> DistinctBy<TSource, TKey>(this IEnumerable<TSource> source, Func<TSource, TKey> keySelector) { HashSet<TKey> keys = new HashSet<TKey>(); foreach (TSource element in source) if (keys.Add(keySelector(element))) yield return element; }
比较两个集合
public static bool CompareType<T>(T oneT, T twoT) { bool result = true;//两个类型作比较时使用,如果有不一样的就false Type typeOne = oneT.GetType(); Type typeTwo = twoT.GetType(); //如果两个T类型不一样 就不作比较 if (!typeOne.Equals(typeTwo)) { return false; } PropertyInfo[] pisOne = typeOne.GetProperties(); //获取所有公共属性(Public) PropertyInfo[] pisTwo = typeTwo.GetProperties(); //如果长度为0返回false if (pisOne.Length <= 0 || pisTwo.Length <= 0) { return false; } //如果长度不一样,返回false if (!(pisOne.Length.Equals(pisTwo.Length))) { return false; } //遍历两个T类型,遍历属性,并作比较 for (int i = 0; i < pisOne.Length; i++) { //获取属性名 string oneName = pisOne[i].Name; string twoName = pisTwo[i].Name; //获取属性的值 object oneValue = pisOne[i].GetValue(oneT, null); object twoValue = pisTwo[i].GetValue(twoT, null); //比较,只比较值类型 if ((pisOne[i].PropertyType.IsValueType || pisOne[i].PropertyType.Name.StartsWith("String")) && (pisTwo[i].PropertyType.IsValueType || pisTwo[i].PropertyType.Name.StartsWith("String"))) { if (oneName.Equals(twoName)) { if (oneValue == null) { if (twoValue != null) { result = false; break; //如果有不一样的就退出循环 } } else if (oneValue != null) { if (twoValue != null) { if (!oneValue.Equals(twoValue)) { result = false; break; //如果有不一样的就退出循环 } } else if (twoValue == null) { result = false; break; //如果有不一样的就退出循环 } } } else { result = false; break; } } else { //如果对象中的属性是实体类对象,递归遍历比较 bool b = CompareType(oneValue, twoValue); if (!b) { result = b; break; } } } return result; }
标签:hash 递归遍历 name 去重 stat his val new return
原文地址:https://www.cnblogs.com/sunliyuan/p/14547296.html