By Ray Lischner
To-the-point, authoritative, no-nonsense ideas have continuously been an indicator of O'Reilly books. The In a Nutshell books have earned a high-quality acceptance within the box because the well-thumbed references that sit down beside the a professional developer's keyboard. C++ in a Nutshell lives as much as the In a Nutshell promise. C++ in a Nutshell is a lean, concentrated reference that gives useful examples for an important, more often than not used, facets of C++.C++ in a Nutshell packs an incredible quantity of knowledge on C++ (and the various libraries used with it) in an imperative fast reference if you reside in a deadline-driven international and wish the evidence yet no longer the frills.The book's language reference is geared up first by way of subject, by way of an alphabetical connection with the language's keyword phrases, entire with syntax summaries and tips to the subject references. The library reference is equipped by means of header dossier, and every library bankruptcy and sophistication announcement offers the sessions and kinds in alphabetical order, for simple look up. Cross-references hyperlink similar tools, periods, and different key positive aspects. this is often a great source for college kids in addition to expert programmers.When you are programming, you wish solutions to questions on language syntax or parameters required by way of library workouts fast. What, for instance, is the C++ syntax to outline an alias for a namespace? simply how do you create and use an iterator to paintings with the contents of a typical library box? C++ in a Nutshell is a concise computing device reference that solutions those questions, placing the entire strength of this versatile, adaptable (but a bit of tough to grasp) language at each C++ programmer's fingertips.
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Extra resources for C++ in a Nutshell
If a class or namespace contains a using directive (described later in this chapter), the used class or namespace is also searched. A friend declaration does not add its name to the class scope. Thus, the rules for name lookup are slightly different than they would be for a member function. If a friend function is defined within the body of the class granting friendship, the name is looked up in the class scope, just as it would be for a member function. If the function is defined outside the class, the class is not searched, so the rules are the same as for an ordinary function.
If a function parameter is a non-const reference, the argument must be an lvalue. A const reference, however, can bind to an rvalue, which permits temporary objects to be passed to the function, which is another characteristic of call-by-value. ") A reference must be initialized so it refers to an object. If a data member is a reference, it must be initialized in the constructor's initializer list (see Chapter 6). Function parameters that are references are initialized in the function call, binding each reference parameter to its corresponding actual argument.
The imported name is a synonym for the original name. Only the declared name is added to the target namespace, which means using an enumerated type does not bring with it all the enumerated literals. If you want to use all the literals, each one requires its own using declaration. Because a name that you reference in a using declaration is added to the current namespace, it might hide names in outer scopes. A using declaration can also interfere with local declarations of the same name. Example 2-18 shows some examples of using declarations.