使用C++11和C++14的高效编程实践:Effective Modern C++

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"Effective Modern C++ 是Scott Meyers的一本针对C++11和C++14新特性的讲解书籍,旨在帮助程序员提升现代C++的使用效率和质量。" 在《Effective Modern C++》这本书中,作者Scott Meyers深入探讨了如何有效地利用C++11和C++14的新特性来编写正确、高效、可维护和可移植的软件。这本书对于那些已经掌握C++基础,想要进一步提升自己技能的开发者来说,是一份极其重要的指南。书中的内容涵盖了许多关键的编程原则、风格和惯用法,旨在帮助读者掌握现代C++的核心精髓。 书中提到的一些关键话题包括: 1. 自动类型声明(Automatic Type Deduction):C++11引入了`auto`关键字,使得变量类型可以根据初始化表达式自动推断,简化了代码并减少了错误。然而,过度使用或不恰当使用`auto`可能导致代码可读性下降,因此需要权衡其利弊。 2. 移动语义(Move Semantics):移动语义是C++11引入的一项重要优化,通过`std::move`和右值引用,可以更有效地处理资源的转移,减少不必要的拷贝,提高程序性能。理解并正确应用移动语义是现代C++编程中不可或缺的一部分。 3. 作用域解析运算符`->*`与成员指针:书中会讨论如何使用成员指针以及与之相关的操作,这对于理解和编写复杂的C++代码至关重要。 4. Lambda表达式:Lambda函数是C++11引入的另一个重要特性,它允许在运行时创建匿名函数,简化了函数对象的创建和使用。了解如何有效地利用lambda表达式可以提高代码的简洁性和可读性。 5. 并发支持:C++11开始提供了对并发编程的支持,如`std::thread`,`std::mutex`等,这本书会介绍如何安全地编写多线程程序,避免竞态条件和其他并发问题。 6. 布尔别名(Bool Aliasing)和短路逻辑:书中将讨论如何避免由于布尔类型的误用导致的问题,尤其是在复杂的逻辑操作中。 7. 智能指针(Smart Pointers):C++11引入了`std::unique_ptr`, `std::shared_ptr`和`std::weak_ptr`等智能指针,以替代原始指针,自动管理对象生命周期,减少内存泄漏。理解何时使用哪种智能指针是现代C++编程的重要知识。 除此之外,书中还会涉及类型推断、模板元编程、右值引用、类型别名、范围for循环、静态断言等多个现代C++的关键主题。通过学习这些内容,开发者能够更好地理解和利用C++11及C++14的新特性,从而编写出更高品质的软件。
2018-04-27 上传
If you’re an experienced C++ programmer and are anything like me, you initially approached C++11 thinking, “Yes, yes, I get it. It’s C++, only more so.” But as you learned more, you were surprised by the scope of the changes. auto declarations, range-based for loops, lambda expressions, and rvalue references change the face of C++, to say nothing of the new concurrency features. And then there are the idiomatic changes. 0 and typedefs are out, nullptr and alias declarations are in. Enums should now be scoped. Smart pointers are now preferable to built-in ones. Moving objects is normally better than copying them. There’s a lot to learn about C++11, not to mention C++14. More importantly, there’s a lot to learn about making effective use of the new capabilities. If you need basic information about “modern” C++ features, resources abound, but if you’re looking for guidance on how to employ the features to create software that’s correct, efficient, maintainable, and portable, the search is more challenging. That’s where this book comes in. It’s devoted not to describing the features of C++11 and C++14, but instead to their effective application. The information in the book is broken into guidelines called Items. Want to understand the various forms of type deduction? Or know when (and when not) to use auto declarations? Are you interested in why const member functions should be thread safe, how to implement the Pimpl Idiom using std::unique_ptr, why you should avoid default capture modes in lambda expressions, or the differences between std::atomic and volatile? The answers are all here. Furthermore, they’re platform-independent, Standards-conformant answers. This is a book about portable C++.