Programming

C++ in a Nutshell by Ray Lischner

By Ray Lischner

To-the-point, authoritative, no-nonsense ideas have continually been an indicator of O'Reilly books. The In a Nutshell books have earned a pretty good popularity within the box because the well-thumbed references that take a seat beside the an expert developer's keyboard. C++ in a Nutshell lives as much as the In a Nutshell promise. C++ in a Nutshell is a lean, centred reference that provides useful examples for an important, typically used, elements of C++.

C++ in a Nutshell packs a tremendous quantity of data on C++ (and the numerous libraries used with it) in an necessary quickly reference if you happen to dwell in a deadline-driven international and wish the proof yet now not the frills.

The book's language reference is geared up first by means of subject, via an alphabetical connection with the language's keyword phrases, entire with syntax summaries and tips to the subject references. The library reference is geared up by means of header dossier, and every library bankruptcy and sophistication assertion provides the sessions and kinds in alphabetical order, for simple search for. Cross-references hyperlink comparable tools, periods, and different key good points. this is often a fantastic source for college students in addition to specialist programmers.

When you're programming, you would like solutions to questions on language syntax or parameters required via library workouts speedy. 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 customary library box? C++ in a Nutshell is a concise machine reference that solutions those questions, placing the whole energy of this versatile, adaptable (but a little bit tricky to grasp) language at each C++ programmer's fingertips.

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Extra resources for C++ in a Nutshell

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It is up to the implementation to define the properties of each language: how parameters are passed to functions, how values are returned from functions, whether and how function names are altered, and so on. In many C++ implementations, a function with "C++" linkage has a “mangled” name, that is, the external name encodes the function name and the types of all its arguments. So the function strlen(const char*) might have an external name of strlen_ _FCcP, making it hard to call the function from a C program, which does not know about C++ name-mangling rules.

The standard library often uses this idiom. For example, operator<< for std::string uses a const reference to the string to avoid making unnecessary copies of the string. ) 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-byvalue. ”) 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).

When a function parameter is an array, the array’s size is ignored, and the type is actually a pointer type, which is the subject of the next section. For a multidimensional array used as a function parameter, the first dimension is ignored, so the type is a pointer to an array. Because the first dimension is ignored in a function parameter, it is usually omitted, leaving empty square brackets: long sum(long data[], size_t n); double chi_sq(double stat[][2]); Pointers A pointer object stores the address of another object.

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