Try_More_On_IEnumerable_T02普通Enumerable | C# Online Compiler

Try_More_On_IEnumerable_T02普通Enumerable by newbe36524

// @nuget: FluentAssertions

using System;

namespace Try_More_On_IEnumerable
{
    class Program
    {
        static void Main(string[] args)
        {
            T02普通Enumerable.Run();
            Console.WriteLine($"运行成功,{DateTime.Now:O}");
        }
    }
}

namespace Try_More_On_IEnumerable
{
    using System.Collections.Generic;
    using FluentAssertions;

    public class T02普通Enumerable
    {
        public static void Run()
        {
            // 通过静态方法获取偶数的Enumerable对象
            var result = GetNumber(10);

            // 断言结果
            result.Should().Equal(0, 2, 4, 6, 8, 10);

            /**
             * 这种写法比起 T01 的写法少了一个集合的创建，通常来说是性能更佳的写法
             */
        }

        /// <summary>
        /// 获取小于等于max的偶数
        /// </summary>
        /// <param name="max"></param>
        /// <returns></returns>
        private static IEnumerable<int> GetNumber(int max)
        {
            for (var i = 0; i <= max; i++)
            {
                if (i % 2 == 0)
                {
                    // 使用 yield return 返回每次迭代的结果
                    yield return i;
                }
            }
        }
    }
}

​x
 
// @nuget: FluentAssertions
​
using System;
​
namespace Try_More_On_IEnumerable
{
    class Program
    {
        static void Main(string[] args)
        {
            T02普通Enumerable.Run();
            Console.WriteLine($"运行成功,{DateTime.Now:O}");
        }
    }
}
​
namespace Try_More_On_IEnumerable
{
    using System.Collections.Generic;
    using FluentAssertions;
​
    public class T02普通Enumerable
    {
        public static void Run()
        {
            // 通过静态方法获取偶数的Enumerable对象
            var result = GetNumber(10);
​
            // 断言结果
            result.Should().Equal(0, 2, 4, 6, 8, 10);
​
            /**
             * 这种写法比起 T01 的写法少了一个集合的创建，通常来说是性能更佳的写法
             */
        }
​
        /// <summary>
        /// 获取小于等于max的偶数
        /// </summary>
        /// <param name="max"></param>
        /// <returns></returns>
        private static IEnumerable<int> GetNumber(int max)
        {
            for (var i = 0; i <= max; i++)
            {
                if (i % 2 == 0)
                {
                    // 使用 yield return 返回每次迭代的结果
                    yield return i;
                }
            }
        }
    }
}
​

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运行成功,2025-07-03T21:40:35.4288274+00:00

Cached Result
Last Run:	9:40:35 pm
Compile:	0.018s
Execute:	0.07s
Memory:	9.59Mb
CPU:	0.088s

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