diff --git a/LinqStudy.Test/LinqToObject/AggregationTest.cs b/LinqStudy.Test/LinqToObject/AggregationTest.cs
index 5087d29..a8b98f0 100644
--- a/LinqStudy.Test/LinqToObject/AggregationTest.cs
+++ b/LinqStudy.Test/LinqToObject/AggregationTest.cs
@@ -26,7 +26,7 @@ namespace LinqStudy.Test.LinqToObject
{
new Person(){ Id=1, Name="张三丰", Age=230},
new Person(){ Id=2, Name="小龙女", Age=28},
- new Person(){ Id=3, Name="银花公主", Age=16},
+ new Person(){ Id=3, Name="云花公主", Age=16},
new Person(){ Id=4, Name="杨过", Age=32},
//new Person(){ Id=5, Name="东方不败", Age=86},
//new Person(){ Id=6, Name="金轮法王", Age=64},
@@ -43,7 +43,7 @@ namespace LinqStudy.Test.LinqToObject
// 由于第4项是最后一项，整个“聚合操作”结束，返回本次“聚合项”作为最后的输出。
var agg = peoples.Aggregate
(
- (aggregateItem, next) =>
+ (aggregateItem, next) =>
{
//把当前元素的年龄加到返回的“聚合项”的年龄，
//最后的聚合项的年龄就是“总年龄”。
@@ -70,11 +70,11 @@ namespace LinqStudy.Test.LinqToObject
{
new Person(){ Id=1, Name="张三丰", Age=230},
new Person(){ Id=2, Name="小龙女", Age=28},
- new Person(){ Id=3, Name="银花公主", Age=16},
+ new Person(){ Id=3, Name="云花公主", Age=16},
new Person(){ Id=4, Name="杨过", Age=32},
};
- var seed =0;
+ var seed = 0;
//因为指定了初始聚合项，一共执行了4次“聚合操作”即每一项执行一次“聚合操作”
var agg = peoples.Aggregate
@@ -82,9 +82,9 @@ namespace LinqStudy.Test.LinqToObject
seed,
(accumulate, currentItem) =>
{
- return accumulate + currentItem.Age;
+ return accumulate + currentItem.Age;
}
- ) ;
+ );
var totalAge = agg;
var expectedAge = 230 + 28 + 16 + 32;
@@ -102,7 +102,7 @@ namespace LinqStudy.Test.LinqToObject
{
new Person(){ Id=1, Name="张三丰", Age=230},
new Person(){ Id=2, Name="小龙女", Age=28},
- new Person(){ Id=3, Name="银花公主", Age=16},
+ new Person(){ Id=3, Name="云花公主", Age=16},
new Person(){ Id=4, Name="杨过", Age=32},
};
@@ -121,11 +121,11 @@ namespace LinqStudy.Test.LinqToObject
},
//改变最后聚合结果，并返回。
- accumulateItem => "总年龄为："+ accumulateItem.ToString()
+ accumulateItem => "总年龄为：" + accumulateItem.ToString()
);
var totalAge = agg;
- var expectedAge = "总年龄为："+ (230 + 28 + 16 + 32).ToString();
+ var expectedAge = "总年龄为：" + (230 + 28 + 16 + 32).ToString();
Assert.Equal(expectedAge.ToString(), totalAge);
}
@@ -138,14 +138,14 @@ namespace LinqStudy.Test.LinqToObject
{
List<Person> peoples = new List<Person>();
- Action act =() => peoples.Aggregate
- (
- (aggregateItem, next) =>
- {
- next.Age = next.Age + aggregateItem.Age;
- return next;
- }
- );
+ Action act = () => peoples.Aggregate
+ (
+ (aggregateItem, next) =>
+ {
+ next.Age = next.Age + aggregateItem.Age;
+ return next;
+ }
+ );
Assert.Throws<InvalidOperationException>(act);
}
@@ -204,7 +204,7 @@ namespace LinqStudy.Test.LinqToObject
new Person(){ Id=4, Name="杨过", Age=32},
};
- var count = peoples.Count(p=>p.Age>28);
+ var count = peoples.Count(p => p.Age > 28);
var expected = 1;
Assert.Equal(count, expected);
@@ -262,7 +262,7 @@ namespace LinqStudy.Test.LinqToObject
{
new Person(){ Id=1, Name="张三丰", Age=230},
new Person(){ Id=2, Name="小龙女", Age=28},
- new Person(){ Id=3, Name="银花公主", Age=16},
+ new Person(){ Id=3, Name="云花公主", Age=16},
new Person(){ Id=4, Name="杨过", Age=32},
new Person(){ Id=5, Name="东方不败", Age=86},
new Person(){ Id=6, Name="金轮法王", Age=64},
@@ -286,7 +286,7 @@ namespace LinqStudy.Test.LinqToObject
{
List<Person> peoples = new List<Person>()
{
-
+
};
Action act = () => peoples.Max(p => p.Age);
@@ -307,7 +307,7 @@ namespace LinqStudy.Test.LinqToObject
{
new Person(){ Id=1, Name="张三丰", Age=230},
new Person(){ Id=2, Name="小龙女", Age=28},
- new Person(){ Id=3, Name="银花公主", Age=16},
+ new Person(){ Id=3, Name="云花公主", Age=16},
new Person(){ Id=4, Name="杨过", Age=32},
new Person(){ Id=5, Name="东方不败", Age=86},
new Person(){ Id=6, Name="金轮法王", Age=64},
diff --git a/LinqStudy.Test/LinqToObject/ConcatTest.cs b/LinqStudy.Test/LinqToObject/ConcatTest.cs
new file mode 100644
index 0000000..ed3cb75
--- /dev/null
+++ b/LinqStudy.Test/LinqToObject/ConcatTest.cs
@@ -0,0 +1,40 @@
+using System;
+using System.Collections;
+using System.Collections.Generic;
+using System.Linq;
+
+using Xunit;
+using LinqStudy;
+
+namespace LinqStudy.Test.LinqToObject
+{
+ ///<summary>
+ /// 串联操作
+ ///<summary>
+ public class ConcatTest
+ {
+ ///<summary>
+ /// Concat：将两个序列合并成一个序列，不去重。与Union不同。
+ ///<summary>
+ public void Concat_Test()
+ {
+ List<Person> peoples1 = new List<Person>()
+ {
+ new Person(){ Id=2, Name="小龙女", Age=28},
+ new Person(){ Id=4, Name="杨过", Age=32},
+ };
+
+ List<Person> peoples2 = new List<Person>()
+ {
+ new Person(){ Id=2, Name="小龙女", Age=28},
+ new Person(){ Id=3, Name="云花公主", Age=16},
+ };
+
+ var concatAct = peoples1.Concat(peoples2);
+
+ var totalCount = concatAct.Count();
+
+ Assert.Equal(4, totalCount);
+ }
+ }
+}
\ No newline at end of file
diff --git a/LinqStudy.Test/LinqToObject/SetsTest.cs b/LinqStudy.Test/LinqToObject/SetsTest.cs
index ec6fea3..4d22ab8 100644
--- a/LinqStudy.Test/LinqToObject/SetsTest.cs
+++ b/LinqStudy.Test/LinqToObject/SetsTest.cs
@@ -122,7 +122,7 @@ namespace LinqStudy.Test.LinqToObject
{
var p1 = new Person() { Id = 1, Name = "杨过", Age = 32 };
var p2 = new Person() { Id = 2, Name = "小龙女", Age = 28 };
- var p3 = new Person() { Id = 3, Name = "银花公主", Age = 16 };
+ var p3 = new Person() { Id = 3, Name = "云花公主", Age = 16 };
List<Person> peoples1 = new List<Person>()
{
@@ -155,7 +155,7 @@ namespace LinqStudy.Test.LinqToObject
{
new Person(){ Id=1, Name="张三丰", Age=230},
new Person(){ Id=2, Name="小龙女", Age=28},
- new Person(){ Id=3, Name="银花公主", Age=16},
+ new Person(){ Id=3, Name="云花公主", Age=16},
new Person(){ Id=4, Name="杨过", Age=32},
};
@@ -222,5 +222,59 @@ namespace LinqStudy.Test.LinqToObject
Assert.Throws<ArgumentNullException>(act);
}
#endregion
+
+ #region Intersect
+
+ ///<summary>
+ /// Intersect: 取交集
+ ///</summary>
+ [Fact]
+ public void Intersect_Test()
+ {
+ var p1 = new Person() { Id = 1, Name = "杨过", Age = 32 };
+ var p2 = new Person() { Id = 2, Name = "小龙女", Age = 28 };
+ var p3 = new Person() { Id = 3, Name = "云花公主", Age = 16 };
+
+ List<Person> peoples1 = new List<Person>()
+ {
+ p1,p2,
+ };
+
+ List<Person> peoples2 = new List<Person>()
+ {
+ p1,p3,
+ };
+
+ var intesectItem = peoples1.Intersect(peoples2);
+ var itemCount = intesectItem.Count();
+
+ Assert.Equal(1, itemCount);
+ }
+
+ ///<summary>
+ /// 引用类型：使用
+ ///</sumaary>
+ [Fact]
+ public void Intersect_Reference_Test()
+ {
+ List<Person> peoples1 = new List<Person>()
+ {
+ new Person(){ Id=1, Name="杨过", Age=32},
+ new Person(){ Id=2, Name="小龙女", Age=28},
+
+ };
+
+ List<Person> peoples2 = new List<Person>()
+ {
+ new Person(){ Id=2, Name="小龙女", Age=28},
+ new Person(){ Id=3, Name="云花公主", Age=16},
+ };
+
+ //虽然两个“小龙女”属性相同，但不是一个对象，没有交集。
+ var intesectItem = peoples1.Intersect(peoples2);
+
+ Assert.Empty(intesectItem);
+ }
+ #endregion
}
}
\ No newline at end of file