A Little Java, A Few Patterns pdf epub mobi txt 电子书下载 2024

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Matthias Felleisen

The MIT Press

1997-12-19

194

USD 28.00

Paperback

9780262561150

图书标签: java 设计模式 Java 函数式编程计算机 Programming 编程王垠推荐

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发表于2024-11-25

A Little Java, A Few Patterns epub 下载 mobi 下载 pdf 下载 txt 电子书下载 2024

A Little Java, A Few Patterns pdf epub mobi txt 电子书下载 2024

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Java is a new object-oriented programming language that was developed by Sun Microsystems for programming the Internet and intelligent appliances. In a very short time it has become one of the most widely used programming languages for education as well as commercial applications.Design patterns, which have moved object-oriented programming to a new level, provide programmers with a language to communicate with others about their designs. As a result, programs become more readable, more reusable, and more easily extensible.In this book, Matthias Felleisen and Daniel Friedman use a small subset of Java to introduce pattern-directed program design. With their usual clarity and flair, they gently guide readers through the fundamentals of object-oriented programming and pattern-based design. Readers new to programming, as well as those with some background, will enjoy their learning experience as they work their way through Felleisen and Friedman's dialogue.

A Little Java, A Few Patterns 下载 mobi epub pdf txt 电子书

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A Little Java, A Few Patterns pdf epub mobi txt 电子书下载

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最后一章没看太明白。晾两年回头来看，也许会明白。

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太啰嗦了

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刚开始的时候，以为是在看函数式语言，因为new一个新的Object就像是在创建一个list一样，一层叠一层，然后就是讲解为什么需要一个visitor类，当datatype的变种变得越来越多的时候，如果要对每一种都添加一个函数的话，那就需要在不同的类中去添加并且要照顾到变种之间的关系，这就萌生了把所有变种的同名函数集中到一起，那就方便互相查看与验证。再然后就是变种的方法函数只需要一个accept就可以了，然后调用一个visitor进行工作，等于是外包工作给任意多的有功能的函数。为什么需要外包工作给visitor，那就是没人能一开始就写出完整无缺的程序，随着需求的修改，需要变动程序，那就是visitor pattern发挥作用的时候，可以单独的增加与原来变种平行的类，并且类之间可以互调……

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用 java 来玩 functional programming ，简单用了用 java 的类型系统。

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