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MulanPSL-2.0

Viyi.Util - .NET 的常用工具扩展

Viyi.Util v2 对该工具库进行了完全重写,完全兼容 v1。

v2 参考其它现代高级语言、类库和日常使用的情况,提供一些常见的工具函数和工具类,以 C# 的“扩展函数”作为主要实现形式,也包含一些 Helper 静态类和其他工具类。

其他相关类库

Viyi.Util 包含内容较多,依赖项也较多,部分功能已经分离出去,按功能分解成一些小工具库

  • Viyi.Strings 专注于扩展字符串相关的功能和工具函数
  • Viyi.Bytes (coming soon) 专注于扩展二进制相关的功能和工具函数

获取

Viyi.Util 通过 NuGet 发布。

Visual Studio 包管理器控制台 中运行下面的命令获取:

PM> Install-Package Viyi.Util

或者在 管理 NuGet 程序包对话框 中安装。

主要特性 (Features)

  • 扩展 object

    • 参考 Kotlin,提供了 .Also().Let() 扩展,同时支持它们的异步版本;
    • 提供 ToXxxx()ConvertTo() 方法,是 System.Convert 类中相关功能的去异常封装;
    • 提供 As() 方法弥补 as 关键字不能应用于结构体 (struct) 类型的问题;
  • 扩展 Linq (Enumerable),

    • 提供 ForEach() / ForEachAsync 扩展;

      注:Viyi.Util 目前不支持 IAsyncEnumerable,请使用 System.Linq.Async

    • 提供 AsToArray()AsToList() 先尝试 as 操作,最大避免重新生成数组或列表对象;

    • 为 .NET6 以下框架提供 MaxBy()MinBy()

    • List<T>T[] 分别提供 Shuffle() 扩展用来打乱其内部元素的顺序;

    • ViyiEnumerable<T>.Of(params T[]) 从一组单个对象创建 IEnumerable<T>

  • 扩展 boolean

    • it.Then()if / if ... else ... 的表达式形式;
    • it.Else()if not 的表达式形式;
    • it.Then(fnThen, fnElse)? : 的函数调用形式;
  • ViyiRandom 提供随机数工具

    • ViyiRandom.Create() 创建随机数据发生器 (Random)

      在 netstandard2.1 和 net6 中使用 Random.Shared 来产生随机种子,在 netstandard2.0 中使用类似的方式,通过一个静态且线程安全的 Random 对象来产生随机种子。

    • ViyiRandom.RandomIndexes() 产生一组以 0 开始的随机序数,可用于产生顺序随机的数据

  • EnumHelper 为枚举类型提供工具方法

    • EnumHelper.EnumerateWith() 将枚举中定义的枚举值转换为指定对象的 IEnumerable
    • EnumHelper.GetDescription() 获取枚举值的 DescriptionAttribute 描述信息;
    • EnumHelper.EnumerateWithDescription()EnumerateWith()类似,但会去分析 DescriptionAttribute 属性,结果保存在 EnumEntry 对象中;
    • EnumHelper.Enumerate() 得到 IEnumerable<KeyValuePair>
    • EnumHelper.ToNameValueCollection() 得到 NameValueCollection(可通过参数交换 Key-Value)
  • 对 Compare 和 Equiality 的支持

    • LambdaCompare 可以通过 Lambda 来产生 IComparer<T> 对象,避免定义类;
    • LambdaEqualityComparer 通过 Lambda 产生 IEqualityComparer<T> 对象,避免定义类;
  • 其它工具

    会根据 Issue 进行分析、确认并完成实现。

目标框架

文档

提供了 Xml Documentation (Viyi.Util.xml) 随 NuGet 包发布。

没有制作专门供阅读的 API 文档,但是可以直接阅读源代码中的文档。

WIKI 中对部分功能进行了说明。

License

木兰宽松许可证,第2版 (MulanPSL2)

注:

Viyi.Util v1.x 使用 MIT,从 v2.0 开始变更为 MulanPSL2

木兰宽松许可证, 第2版 木兰宽松许可证, 第2版 2020年1月 http://license.coscl.org.cn/MulanPSL2 您对“软件”的复制、使用、修改及分发受木兰宽松许可证,第2版(“本许可证”)的如下条款的约束: 0. 定义 “软件”是指由“贡献”构成的许可在“本许可证”下的程序和相关文档的集合。 “贡献”是指由任一“贡献者”许可在“本许可证”下的受版权法保护的作品。 “贡献者”是指将受版权法保护的作品许可在“本许可证”下的自然人或“法人实体”。 “法人实体”是指提交贡献的机构及其“关联实体”。 “关联实体”是指,对“本许可证”下的行为方而言,控制、受控制或与其共同受控制的机构,此处的控制是指有受控方或共同受控方至少50%直接或间接的投票权、资金或其他有价证券。 1. 授予版权许可 每个“贡献者”根据“本许可证”授予您永久性的、全球性的、免费的、非独占的、不可撤销的版权许可,您可以复制、使用、修改、分发其“贡献”,不论修改与否。 2. 授予专利许可 每个“贡献者”根据“本许可证”授予您永久性的、全球性的、免费的、非独占的、不可撤销的(根据本条规定撤销除外)专利许可,供您制造、委托制造、使用、许诺销售、销售、进口其“贡献”或以其他方式转移其“贡献”。前述专利许可仅限于“贡献者”现在或将来拥有或控制的其“贡献”本身或其“贡献”与许可“贡献”时的“软件”结合而将必然会侵犯的专利权利要求,不包括对“贡献”的修改或包含“贡献”的其他结合。如果您或您的“关联实体”直接或间接地,就“软件”或其中的“贡献”对任何人发起专利侵权诉讼(包括反诉或交叉诉讼)或其他专利维权行动,指控其侵犯专利权,则“本许可证”授予您对“软件”的专利许可自您提起诉讼或发起维权行动之日终止。 3. 无商标许可 “本许可证”不提供对“贡献者”的商品名称、商标、服务标志或产品名称的商标许可,但您为满足第4条规定的声明义务而必须使用除外。 4. 分发限制 您可以在任何媒介中将“软件”以源程序形式或可执行形式重新分发,不论修改与否,但您必须向接收者提供“本许可证”的副本,并保留“软件”中的版权、商标、专利及免责声明。 5. 免责声明与责任限制 “软件”及其中的“贡献”在提供时不带任何明示或默示的担保。在任何情况下,“贡献者”或版权所有者不对任何人因使用“软件”或其中的“贡献”而引发的任何直接或间接损失承担责任,不论因何种原因导致或者基于何种法律理论,即使其曾被建议有此种损失的可能性。 6. 语言 “本许可证”以中英文双语表述,中英文版本具有同等法律效力。如果中英文版本存在任何冲突不一致,以中文版为准。 条款结束 如何将木兰宽松许可证,第2版,应用到您的软件 如果您希望将木兰宽松许可证,第2版,应用到您的新软件,为了方便接收者查阅,建议您完成如下三步: 1, 请您补充如下声明中的空白,包括软件名、软件的首次发表年份以及您作为版权人的名字; 2, 请您在软件包的一级目录下创建以“LICENSE”为名的文件,将整个许可证文本放入该文件中; 3, 请将如下声明文本放入每个源文件的头部注释中。 Copyright (c) [Year] [name of copyright holder] [Software Name] is licensed under Mulan PSL v2. 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简介

.NET 的数据格式处理和数据转换工具 展开 收起
C#
MulanPSL-2.0
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