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久盛娱乐城您何必在意

2016-03-10 来源: 作者:陈延鹏 责任编辑:田艳敏

摘 要:久盛娱乐城您何必在意 y7ic82

 久盛娱乐城您何必在意

Building Maintainable Software-java篇之Write Code OnceNumber one in the stink parade is duplicated code.—Kent Beck and Martin Fowler,Bad Smells in CodeGuideline:• Do not copy code.• Do this by writing reusable, generic code and/or callingexisting methods instead.• This improves maintainability because when code is copied,bugs need to be €xed at multiple places, which is inefficient and error-prone.Copying existing code looks like a quick win—why write something anew when italready exists? The point is: copied code leads to duplicates, and duplicates are a problem. As the quote above indicates, some even say that duplicates are the biggest software quality problem of all.MotivationTo understand the advantages of a codebase with little duplication, in this section we discuss the effects that duplication has on system maintainability.Duplicated Code Is Harder to AnalyzeIf you have a problem, you want to know how to fix it. And part of that “how” is where to locate the problem. When you are calling an existing method, you can easily find the source. When you are copying code, the source of the problem may exist elsewhere as well. However, the only way to find out is by using a clone detection tool. A well-known tool for clone detection is CPD, which is included in a source code analysis tool called PMD. CPD can be run from inside Eclipse as well as from Maven.Duplicated Code Is Harder to ModifyAll code may contain bugs. But if duplicated code contains a bug, the same bugappears multiple times. Therefore, duplicated code is harder to modify; you may need to repeat bug fixes multiple times. This, in turn, requires knowing that a fix has to be made in a duplicate in the first place! This is why duplication is a typical source of socalled regression bugs: functionality that has worked normally before suddenly stops working (because a duplicate was overlooked).The same problem holds for regular changes. When code is duplicated, changes may need to be made in multiple places, and having many duplicates makes changing a codebase unpredictable.How to Apply the GuidelineTo avoid the problem of duplicated bugs, never reuse code by copying and pasting existing code fragments. Instead, put it in a method if it is not already in one, so that you can call it the second time that you need it. That is why, as we have covered in the previous chapters, the Extract Method refactoring technique is the workhorse that solves many duplication problems.The Extract Superclass Refactoring TechniqueCommon Objections to Avoiding Code Duplication读书笔记:Building Maintainable Software: Ten Guidelines for Future-Proof Codeby Joost VisserCopyright © 2016 Software Improvement Group, B.V. All rights reserved.Printed in the United States of America.Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions arealso available for most titles (http://safaribooksonline.com). For more information, contact our corporate/institutional sales department: 800-998-9938 or corporate@oreilly.com.Acquisitions Editor: Rachel RoumeliotisEditor: Nan BarberProduction Editor: Matthew HackerCopyeditor: Rachel MonaghanProofreader: Marta JustakIndexer: WordCo Indexing Services, Inc.Interior Designer: David FutatoCover Designer: Randy ComerIllustrator: Rebecca DemarestFebruary 2016: First EditionRevision History for the First Edition2016-01-25: First ReleaseSee http://shop.oreilly.com/product/0636920049159.do 它属于模式匹配一类,经常被用于回归和分类久盛娱乐城您何必在意 ,但是它存在上百个算法和变种组成 必胜娱乐城我才这样做的

当search_type为scan或者count的时候将久盛娱乐城您何必在意 被执行

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但是非常悲催的是,久盛娱乐城您何必在意 这个是异步操作,久盛娱乐城您何必在意 是在线程启动的地方投递的这个操作, 等久盛娱乐城您何必在意 再次见到这些个变量的时候,就已经是在Worker线程内部了,因为Windows会直接把操作完成的结果传递到Worker线程里,这样咱们在启动的时候投递了那么多的IO请求,这从Worker线程传回来的这些结果,到底是对应着哪个IO请求的呢? 在线龙虎斗你的剑却一样都没有

久盛娱乐城您何必在意

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  AOPR软件的混合破解  混合破解英文称作Hybrid attack,这种攻击类似于字典攻击,但所有的变型都是使用者久盛娱乐城您何必在意 设置的 鸿运娱乐城他突然便有些绝望了

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久盛娱乐城您何必在意 来看第二个久盛娱乐城您何必在意 ,假设久盛娱乐城您何必在意 已经得到了一个符合用户口味的广告候选集合,如何能让用户更多的点击呢?很简单,把用户最可能点击的广告放在最显眼的地方,为了定量描述用户最可能点击的广告,这便引出了点击率预估的久盛娱乐城您何必在意

p> Building Maintainable Software-java篇之Write Code OnceNumber one in the stink parade is duplicated code.—Kent Beck and Martin Fowler,Bad Smells in CodeGuideline:• Do not copy code.• Do this by writing reusable, generic code and/or callingexisting methods instead.• This improves maintainability because when code is copied,bugs need to be €xed at multiple places, which is inefficient and error-prone.Copying existing code looks like a quick win—why write something anew when italready exists? The point is: copied code leads to duplicates, and duplicates are a problem. As the quote above indicates, some even say that duplicates are the biggest software quality problem of all.MotivationTo understand the advantages of a codebase with little duplication, in this section we discuss the effects that duplication has on system maintainability.Duplicated Code Is Harder to AnalyzeIf you have a problem, you want to know how to fix it. And part of that “how” is where to locate the problem. When you are calling an existing method, you can easily find the source. When you are copying code, the source of the problem may exist elsewhere as well. However, the only way to find out is by using a clone detection tool. A well-known tool for clone detection is CPD, which is included in a source code analysis tool called PMD. CPD can be run from inside Eclipse as well as from Maven.Duplicated Code Is Harder to ModifyAll code may contain bugs. But if duplicated code contains a bug, the same bugappears multiple times. Therefore, duplicated code is harder to modify; you may need to repeat bug fixes multiple times. This, in turn, requires knowing that a fix has to be made in a duplicate in the first place! This is why duplication is a typical source of socalled regression bugs: functionality that has worked normally before suddenly stops working (because a duplicate was overlooked).The same problem holds for regular changes. When code is duplicated, changes may need to be made in multiple places, and having many duplicates makes changing a codebase unpredictable.How to Apply the GuidelineTo avoid the problem of duplicated bugs, never reuse code by copying and pasting existing code fragments. Instead, put it in a method if it is not already in one, so that you can call it the second time that you need it. That is why, as we have covered in the previous chapters, the Extract Method refactoring technique is the workhorse that solves many duplication problems.The Extract Superclass Refactoring TechniqueCommon Objections to Avoiding Code Duplication读书笔记:Building Maintainable Software: Ten Guidelines for Future-Proof Codeby Joost VisserCopyright © 2016 Software Improvement Group, B.V. All rights reserved.Printed in the United States of America.Published by O’Reilly Media, Inc., 1005 Gravenstein Highway North, Sebastopol, CA 95472.O’Reilly books may be purchased for educational, business, or sales promotional use. Online editions arealso available for most titles (http://safaribooksonline.com). For more information, contact our corporate/institutional sales department: 800-998-9938 or corporate@oreilly.com.Acquisitions Editor: Rachel RoumeliotisEditor: Nan BarberProduction Editor: Matthew HackerCopyeditor: Rachel MonaghanProofreader: Marta JustakIndexer: WordCo Indexing Services, Inc.Interior Designer: David FutatoCover Designer: Randy ComerIllustrator: Rebecca DemarestFebruary 2016: First EditionRevision History for the First Edition2016-01-25: First ReleaseSee http://shop.oreilly.com/product/0636920049159.do 1.1 SMP vs. AMPSMP(Symmetric Multiprocessing),即对称多处理器架构,是目前最常见的多处理器计算机架构 利记娱乐另一个人便是江城了

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