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内容简介:
The first book to provide complete and accurate information on using templates in C++.– Great author team – both are widely respected, and bring complementary viewpoints to the book.– With the greatly increased use of templates there is a real need in the C++ community for this information.This book will be the next C++ classic. Although templates have been part of C++ for well over a decade, they still lead to misunderstanding, misuse, and controversy. At the same time, they are increasingly found to be powerful instruments for the development of cleaner, faster, and smarter software. This has made templates one of the hottest topics in the C++ community. This book will be both a complete reference as well as a tutorial. It will emphasize the practical use of templates, and will include real-world examples. Every working C++ programmer will need a copy of this book for his or her library.
作者简介:
David Vandevoorde is an engineer at the Edison Design Group. He is an active member of the ANSI C++ Standards Committee, and a cofounder of the newsgroup comp.lang.c++.moderated. A graduate of the Brussels Free University and the Rensselaer Polytechnic Institute, his interests include algorithm development, programming languages, and teaching. See www.vandevoorde.com.Nicolai M. Josuttis is an independent technical consultant who designs object-oriented software for the telecommunications, traffic, finance, and manufacturing industries. He is an active member of the C++ Standards Committee Library Working Group. Nicolai has written several books on object-oriented programming and C++.
原文摘录:
Thus, templates are compiled twice:
Without instantiation, the template code itself is checked for correct syntax. Syntax errors are discovered, such as missing semicolons.
At the time of instantiation, the template code is checked to ensure that all calls are valid. Invalid calls are discovered, such as unsupported function calls.
This leads to an important problem in the handling of templates in practice: When a function template is used in a way that triggers its instantiation, a compiler will (at some point) need to see that template’s definition. This breaks the usual compile and link distinction for ordinary functions, when the declaration of a function is sufficient to compile its use. Methods of handling this problem are discussed in Chapter 6. For the moment, let’s take the sim… (查看原文)
Outlier
2012-02-16 01:04:18
—— 引自章节：2.1.2 Using the Template