Download PDF by Peter Van Weert, Marc Gregoire: C++ Standard Library Quick Reference

By Peter Van Weert, Marc Gregoire

ISBN-10: 1484218752

ISBN-13: 9781484218754

This speedy reference is a condensed reference advisor to the fundamental facts constructions, algorithms, and capabilities supplied through the C++ general Library. extra particularly, this can be a compact number of crucial periods and capabilities, utilized by C++ programmers each day. The C++ normal Library quickly Reference positive factors middle sessions for strings, I/O streams, and diverse typical packing containers, in addition to a entire set of algorithms to control them. in recent times, the C++11 and C++14 criteria have additional much more effective box sessions, a brand new strong standard expression library, and a conveyable multithreading library that includes threads, mutexes, variables, and atomic variables. keep in mind that, it's difficult to grasp and take into accout the entire chances, information, and intricacies of this big and becoming library. this convenient reference consultant is for this reason integral to any C++ programmer. It deals a condensed, well-structured precis of all crucial facets of the C++ general Library, together with all aforementioned performance. No page-long, repetitive examples or vague, hardly ever used beneficial properties. as a substitute, every thing you must be aware of and beware of in perform is printed in a compact, to-the-point sort, interspersed with well-chosen, clarifying examples. The ebook doesn't clarify the C++ language or syntax, yet is out there to a person with easy C++ wisdom. Even the main skilled C++ programmer although will research a specific thing or from it and locate it an invaluable memory-aid.

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These smart pointers maintain a thread-safe reference count for a shared memory resource, which is deleted once its reference count reaches zero: that is, once the last shared_ptr that co-owned it is destructed. The use_count() member returns the reference count, and unique() checks whether the count equals one. info CHAPTER 2 ■ GENERAL UTILITIES Like a unique_ptr, it has ->, *, cast-to-Boolean, and comparison operators to mimic a raw pointer. Equivalent get() and reset() members are provided as well, but no release().

Before overwriting the old pointer, it is deleted. It therefore also does not return any value: ■ Tip Take care for memory leaks when transferring ownership using release(). release(), f()). If the call to f() throws after the unique_ptr has released ownership, Niles leaks. Therefore, always make sure expressions containing release() subexpressions do not contain any throwing subexpressions as well. In the example, the solution would be to evaluate f() on an earlier line, storing its result in a named variable.

Usually true for all standard integer types, except bool. Usually false for all floating-point types. info Chapter 1 ■ Numerics and Math The following members are relevant only for floating-point types. g. when converting to text and back. Use (at least) max_digits10 precision when converting floating-point numbers to text, and it will give the exact same value again when parsed back (9 for float, 17 for double, 22 for long double). min_exponent10, min_exponent, max_exponent10, max_exponent The lowest negative (for min_*) or highest positive (for max_*) integer n such that 10n (for *10) or radix n-1 (otherwise) is a valid normalized floating-point value.

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C++ Standard Library Quick Reference by Peter Van Weert, Marc Gregoire

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