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Showing content from https://timsong-cpp.github.io/cppwp/n4659/library.general below:

[library.general]

20 Library introduction [library] 20.1 General [library.general]

This Clause describes the contents of the C++ standard library, how a well-formed C++ program makes use of the library, and how a conforming implementation may provide the entities in the library.

Detailed specifications for each of the components in the library are in Clauses [language.support][thread], as shown in Table 15.

Table

15

— Library categories


The diagnostics library provides a consistent framework for reporting errors in a C++ program, including predefined exception classes.

The general utilities library includes components used by other library elements, such as a predefined storage allocator for dynamic storage management, and components used as infrastructure in C++ programs, such as tuples, function wrappers, and time facilities.

The strings library provides support for manipulating text represented as sequences of type char, sequences of type char16_­t, sequences of type char32_­t, sequences of type wchar_­t, and sequences of any other character-like type.

The containers, iterators, and algorithms libraries provide a C++ program with access to a subset of the most widely used algorithms and data structures.

The numerics library provides numeric algorithms and complex number components that extend support for numeric processing. The valarray component provides support for n-at-a-time processing, potentially implemented as parallel operations on platforms that support such processing. The random number component provides facilities for generating pseudo-random numbers.

The input/output library provides the iostream components that are the primary mechanism for C++ program input and output. They can be used with other elements of the library, particularly strings, locales, and iterators.

The thread support library provides components to create and manage threads, including mutual exclusion and interthread communication.


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