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Jingdong book

函数式编程思维

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Jingdong book

函数式编程思维

Name: 函数式编程思维
Brand: Jingdong book
SKU: 3118218141
Price: 32.88 USD
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Java等现代编程语言中出现了越来越多的函数式特性，跟随这本书，去了解语法表象之下真正需要掌握的新思维。中高级开发者可以从知名软件架构师Neal Ford的演示中，体会到函数式编程思想是怎样通过改换视角，让我们站在了另一个抽象层次上，把编程问题看得更加清晰。

本书每一章都会给出各种函数式编程思维的示例，并用Java 8或其他具备函数式能力的JVM语言代码实现出来。改变你的思维是本书的愿望，至少读完本书的时候，你会对各种函数式概念有一个良好的把握。

具体说来，本书将——

解释为什么众多命令式语言都在增加函数式能力
通过普通的编程问题来比较函数式和命令式的解答方案
考察将例行杂务委托给运行时的各种方式
学习用记忆和缓求值特性来取代手工编写的方案
探讨在函数式语境下的设计模式和代码重用
分别在Java 8、函数式架构和Web框架下检验函数式思维在真实案例中的表现
分析生活在一个范式更丰富多彩的世界里的优缺点

Content Description

《函数式编程思维》脱离特定的语言特性，关注各种OOP语言的共同实践做法，展示如何通过函数式语言解决问题。例如，如何利用函数式语言，通过高阶函数、多元方法等完成代码重用。知名软件架构师Neal Ford为我们展示不同的编程范式，帮我们完成从Java命令式编程人员，到使用Java、Clojure、Scala函数式编程人员的完美转变，建立对函数式语言的语法和语义的良好理解。

Author Description

Neal Ford在跨国IT咨询公司ThoughtWorks担任总监、软件架构师和文化基因传播人。他精通各种编程语言，主要的咨询业务是大规模企业应用的设计、构建和工程实践。他还是一位国际知名的讲师，登上过全世界各种开发者会议的讲台。

Catalogue

译者序 ix
前言 xi
第1 章为什么 1
1．1范式转变 2
1．2跟上语言发展的潮流 4
1．3把控制权让渡给语言/ 运行时 4
1．4简洁 5
第2 章转变思维 9
2．1普通的例子 9
2．1．1命令式解法 9
2．1．2函数式解法 10
2．2案例研究：完美数的分类问题 15
2．2．1完美数分类的命令式解法 15
2．2．2稍微向函数式靠拢的完美数分类解法 16
2．2．3完美数分类的Java 8 实现 18
2．2．4完美数分类的Functional Java 实现 19
2．3具有普遍意义的基本构造单元 21
2．3．1筛选 22
2．3．2映射 23
2．3．3折叠/ 化约 25
2．4函数的同义异名问题 28
2．4．1筛选 28
2．4．2映射 31
2．4．3折叠/ 化约 33
第3 章权责让渡 37
3．1迭代让位于高阶函数 37
3．2闭包 38
3．3柯里化和函数的部分施用 41
3．3．1定义与辨析 41
3．3．2Groovy 的情况 42
3．3．3Clojure 的情况 44
3．3．4Scala 的情况 44
3．3．5一般用途 47
3．4递归 48
3．5Stream 和作业顺序重排 53
第4 章用巧不用蛮 55
4．1记忆 55
4．1．1缓存 56
4．1．2引入“记忆” 59
4．2缓求值 65
4．2．1Java 语言下的缓求值迭代子 65
4．2．2使用Totally Lazy 框架的完美数分类实现 67
4．2．3Groovy 语言的缓求值列表 69
4．2．4构造缓求值列表 72
4．2．5缓求值的好处 74
4．2．6缓求值的字段初始化 76
第5 章演化的语言 79
5．1少量的数据结构搭配大量的操作 79
5．2让语言去迎合问题 81
5．3对分发机制的再思考 82
5．3．1Groovy 对分发机制的改进82
5．3．2“身段柔软”的Clojure 语言 83
5．3．3Clojure 的多重方法和基于任意特征的多态 85
5．4运算符重载 87
5．4．1Groovy 87
5．4．2Scala 89
5．5函数式的数据结构 91
5．5．1函数式的错误处理 91
5．5．2Either 类 92
5．5．3Option 类 100
5．5．4Either 树和模式匹配 100
第6 章模式与重用 107
6．1函数式语言中的设计模式 107
6．2函数级别的重用 108
6．2．1Template Method 模式 109
6．2．2Strategy 模式 111
6．2．3Flyweight 模式和记忆 113
6．2．4Factory 模式和柯里化 116
6．3结构化重用和函数式重用的对比 117
第7 章现实应用 125
7．1Java 8 125
7．1．1函数式接口 126
7．1．2Optional 类型 128
7．1．3Java 8 的stream 128
7．2函数式的基础设施 129
7．2．1架构 129
7．2．2Web 框架 132
7．2．3数据库 133
第8 章多语言与多范式 135
8．1函数式与元编程的结合 136
8．2利用元编程在数据类型之间建立映射 137
8．3多范式语言的后顾之忧 140
8．4上下文型抽象与复合型抽象的对比 141
8．5函数式金字塔 143
作者简介 147
封面介绍 147

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