Download Advanced Metaprogramming in Classic C++ by Davide Di Gennaro PDF

By Davide Di Gennaro

ISBN-10: 1484210107

ISBN-13: 9781484210109

ISBN-10: 1484210115

ISBN-13: 9781484210116

Advanced Metaprogramming in vintage C++ goals to be either an creation and a connection with C++ template metaprogramming (TMP); TMP is gifted within the e-book as a suite of ideas that would deliver a brand new variety in C++ and make code enormously transparent and effective. The publication bargains with language points, layout styles, examples and functions (seen as case studies). distinctive emphasis is wear small reusable recommendations that would enhance the standard of day-by-day paintings.

What makes the e-book unparalleled is the extent of figuring out of the thoughts concerned imparted by means of the writer. this isn't only a rote evaluation of metaprogramming. you are going to actually comprehend tough themes like static assertions, the best way to write metafunctions, overload answer, lambda expressions, etc. greater than that, you are going to paintings via them with sensible examples guided via the author's frank motives. This booklet calls for you to imagine and to benefit and to appreciate the language so you might software at the next level.

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TheObj_); } Due to lookup rules, swap_with_ADL forwards the call to either a swap function defined in the same namespace as T (which hopefully is T’s own version), or to std::swap if nothing else exists. Since there’s no local member function with a similar name, lookup escapes class level. The traditional argument for swap is T&; however, it may make sense to provide more overloads. end()); } }; And even more41: struct unchecked_type_t {}; inline unchecked_type_t unchecked() { return unchecked_type_t(); } template class sorted_vector { // ...

Some programmers consider them a necessary evil and indeed they are necessary, but it’s not obvious they are also evil. Macros must: • Allow the reader to recognize them • Prevent name collisions As discussed in [5], usually member function names should be actions. Thus empty should be a synonym for make_empty and not for is_empty. However, STL convention is established and universally understood. When in doubt, do as std::vector does. 27 41 Chapter 1 ■ Templates The easiest way to satisfy both requirements is to choose a unique and sufficiently ugly common prefix for all macros and play with lower/uppercase to give extra meaning to the name.

See also [5]. empty()) throw std::runtime_error("failure"); } Most readers will describe this fragment as, “If the multidimensional vector is not empty, then throw an exception”. However, nothing in the code states that this is the intended behavior except style. 27 The naming convention is a big component of style. The following example lists some ideas for how to convey extra meaning when building the name of an object. It is not intended as a set of axioms, and in particular no item is worse/better than its opposite, but it’s a detailed example of how to assemble a style that can help you diagnose and solve problems.

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Advanced Metaprogramming in Classic C++ by Davide Di Gennaro


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