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sheng-jiesheng-jie
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迭代器模式
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‎DesignPattern.sln‎

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@@ -33,6 +33,8 @@ Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "ObserverPattern", "Observer
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "FacadePattern", "FacadePattern\FacadePattern.csproj", "{CA00E48A-FCA2-44F1-A7C3-DF89FD3802BE}"
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EndProject
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Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "IteratorPattern", "IteratorPattern\IteratorPattern.csproj", "{04898517-CD60-419B-9C4D-2BE8A99C40FC}"
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EndProject
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Global
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GlobalSection(SolutionConfigurationPlatforms) = preSolution
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Debug|Any CPU = Debug|Any CPU
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{CA00E48A-FCA2-44F1-A7C3-DF89FD3802BE}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{CA00E48A-FCA2-44F1-A7C3-DF89FD3802BE}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{CA00E48A-FCA2-44F1-A7C3-DF89FD3802BE}.Release|Any CPU.Build.0 = Release|Any CPU
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{04898517-CD60-419B-9C4D-2BE8A99C40FC}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
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{04898517-CD60-419B-9C4D-2BE8A99C40FC}.Debug|Any CPU.Build.0 = Debug|Any CPU
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{04898517-CD60-419B-9C4D-2BE8A99C40FC}.Release|Any CPU.ActiveCfg = Release|Any CPU
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{04898517-CD60-419B-9C4D-2BE8A99C40FC}.Release|Any CPU.Build.0 = Release|Any CPU
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EndGlobalSection
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GlobalSection(SolutionProperties) = preSolution
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HideSolutionNode = FALSE

‎IteratorPattern/App.config‎

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<?xml version="1.0" encoding="utf-8" ?>
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<configuration>
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<startup>
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<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.5.1" />
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</startup>
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</configuration>

‎IteratorPattern/Iterator.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace IteratorPattern
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{
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// 抽象聚合类
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public interface IListCollection
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{
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Iterator GetIterator();
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}
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// 迭代器抽象类
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public interface Iterator
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{
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bool MoveNext();
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Object GetCurrent();
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void Next();
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void Reset();
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}
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// 具体聚合类
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public class ConcreteList : IListCollection
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{
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readonly string[] _collection;
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public ConcreteList()
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{
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_collection = new string[] { "A", "B", "C", "D" };
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}
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public Iterator GetIterator()
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{
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return new ConcreteIterator(this);
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}
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public int Length
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{
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get { return _collection.Length; }
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}
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public string GetElement(int index)
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{
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return _collection[index];
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}
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}
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// 具体迭代器类
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public class ConcreteIterator : Iterator
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{
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// 迭代器要集合对象进行遍历操作，自然就需要引用集合对象
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private ConcreteList _list;
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private int _index;
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public ConcreteIterator(ConcreteList list)
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{
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_list = list;
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_index = 0;
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}
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public bool MoveNext()
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{
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if (_index < _list.Length)
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{
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return true;
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}
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return false;
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}
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public Object GetCurrent()
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{
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return _list.GetElement(_index);
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}
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public void Reset()
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{
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_index = 0;
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}
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public void Next()
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{
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if (_index < _list.Length)
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{
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_index++;
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}
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}
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}
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}

‎IteratorPattern/IteratorPattern.csproj‎

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<?xml version="1.0" encoding="utf-8"?>
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<Project ToolsVersion="14.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
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<Import Project="$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props" Condition="Exists('$(MSBuildExtensionsPath)\$(MSBuildToolsVersion)\Microsoft.Common.props')" />
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<PropertyGroup>
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<Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
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<Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
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<ProjectGuid>{04898517-CD60-419B-9C4D-2BE8A99C40FC}</ProjectGuid>
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<OutputType>Exe</OutputType>
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<AppDesignerFolder>Properties</AppDesignerFolder>
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<RootNamespace>IteratorPattern</RootNamespace>
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<AssemblyName>IteratorPattern</AssemblyName>
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<TargetFrameworkVersion>v4.5.1</TargetFrameworkVersion>
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<FileAlignment>512</FileAlignment>
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<AutoGenerateBindingRedirects>true</AutoGenerateBindingRedirects>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugSymbols>true</DebugSymbols>
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<DebugType>full</DebugType>
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<Optimize>false</Optimize>
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<OutputPath>bin\Debug\</OutputPath>
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<DefineConstants>DEBUG;TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
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<PlatformTarget>AnyCPU</PlatformTarget>
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<DebugType>pdbonly</DebugType>
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<Optimize>true</Optimize>
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<OutputPath>bin\Release\</OutputPath>
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<DefineConstants>TRACE</DefineConstants>
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<ErrorReport>prompt</ErrorReport>
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<WarningLevel>4</WarningLevel>
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</PropertyGroup>
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<ItemGroup>
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<Reference Include="System" />
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<Reference Include="System.Core" />
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<Reference Include="System.Xml.Linq" />
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<Reference Include="System.Data.DataSetExtensions" />
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<Reference Include="Microsoft.CSharp" />
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<Reference Include="System.Data" />
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<Reference Include="System.Net.Http" />
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<Reference Include="System.Xml" />
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</ItemGroup>
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<ItemGroup>
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<Compile Include="Iterator.cs" />
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<Compile Include="Program.cs" />
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<Compile Include="Properties\AssemblyInfo.cs" />
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</ItemGroup>
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<ItemGroup>
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<None Include="App.config" />
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</ItemGroup>
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<Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />
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<!-- To modify your build process, add your task inside one of the targets below and uncomment it.
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Other similar extension points exist, see Microsoft.Common.targets.
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<Target Name="BeforeBuild">
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</Target>
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<Target Name="AfterBuild">
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</Target>
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-->
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</Project>

‎IteratorPattern/Program.cs‎

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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using System.Threading.Tasks;
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namespace IteratorPattern
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{
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class Program
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{
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static void Main(string[] args)
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{
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Console.WriteLine("迭代器模式：");
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IListCollection list = new ConcreteList();
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var iterator = list.GetIterator();
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while (iterator.MoveNext())
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{
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int i = (int)iterator.GetCurrent();
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Console.WriteLine(i.ToString());
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iterator.Next();
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}
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Console.Read();
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}
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}
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}

‎IteratorPattern/Properties/AssemblyInfo.cs‎

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using System.Reflection;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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// 有关程序集的一般信息由以下
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// 控制。更改这些特性值可修改
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// 与程序集关联的信息。
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[assembly: AssemblyTitle("IteratorPattern")]
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[assembly: AssemblyDescription("")]
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[assembly: AssemblyConfiguration("")]
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[assembly: AssemblyCompany("")]
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[assembly: AssemblyProduct("IteratorPattern")]
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[assembly: AssemblyCopyright("Copyright © 2017")]
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[assembly: AssemblyTrademark("")]
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[assembly: AssemblyCulture("")]
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//将 ComVisible 设置为 false 将使此程序集中的类型
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//对 COM 组件不可见。 如果需要从 COM 访问此程序集中的类型，
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//请将此类型的 ComVisible 特性设置为 true。
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[assembly: ComVisible(false)]
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// 如果此项目向 COM 公开，则下列 GUID 用于类型库的 ID
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[assembly: Guid("04898517-cd60-419b-9c4d-2be8a99c40fc")]
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// 程序集的版本信息由下列四个值组成:
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//
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// 主版本
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// 次版本
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// 生成号
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// 修订号
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//
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//可以指定所有这些值，也可以使用“生成号”和“修订号”的默认值，
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// 方法是按如下所示使用“*”: :
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// [assembly: AssemblyVersion("1.0.*")]
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[assembly: AssemblyVersion("1.0.0.0")]
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[assembly: AssemblyFileVersion("1.0.0.0")]

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