Name: ISO/IEC TR 19768:2007 — Information technology — Programming languages — Technical Report on C++ Library Extensions
SKU: ISO/IEC TR 19768:2007
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Abstract

Overview

ISO/IEC TR 19768:2007 - "Information technology - Programming languages - Technical Report on C++ Library Extensions" documents a set of proposed extensions to the C++ standard library (ISO/IEC 14882). The report catalogues additional library components, header-level additions, class templates and requirements intended to reflect widespread practice and to identify candidates for future standardization. It also addresses interoperability with the C programming language (ISO/IEC 9899) where relevant.

Key topics and technical requirements

The report organizes extensions into focused areas and specifies header names, class templates, semantics and implementation requirements. Major technical topics include:

General utilities
- Reference wrappers and helper utilities (e.g., reference_wrapper)
- Smart pointer concepts (shared_ptr, weak_ptr, enable_shared_from_this) and their ownership/observer semantics
Functional programming and function objects
- Polymorphic function wrappers, bind/mem_fn helpers, placeholders, and function-related helper types
Metaprogramming and type traits
- Compile-time type queries and transformations defined in a proposed header (type categories, relationships, const/volatile/reference/array/pointer transformations)
Numerical facilities
- Random number generation framework (engines, distributions, random_device)
- Additional mathematical special functions listed for support
Containers
- Tuple and pair types, fixed-size array (), and unordered associative containers (unordered_set, unordered_map, unordered_multiset, unordered_multimap) including hash function requirements and exception-safety guarantees
Regular expressions
- A header, regex_traits, regex_error and matching APIs with options and match flags
C interoperability
- Facilities improving interaction with ISO/IEC 9899 (C) for better cross-language compatibility

The TR prescribes namespaces and headers, functional semantics, algorithms, exception-safety, and observable behavior required for implementers.

Applications and who uses it

ISO/IEC TR 19768:2007 is primarily useful to:

Library and compiler implementers - as guidance for adding standardized extensions to the C++ library
Tool and framework authors - who need standardized smart pointers, hashing, tuples, arrays, regex and RNG facilities
Developers in domains requiring numerical and statistical tools - who benefit from uniform random engines and specialized math functions
Teams working on C/C++ interoperability - to improve safe integration with C code

Adopting these extensions promotes portability, reduces ad‑hoc implementations, and speeds development of higher-level C++ applications.

Related standards

ISO/IEC 14882 - The C++ programming language standard
ISO/IEC 9899 - The C programming language standard

Keywords: ISO/IEC TR 19768:2007, C++ library extensions, C++ standard library, shared_ptr, type_traits, random number generation, unordered_map, regex, reference-counted pointers, metaprogramming.

ISO/IEC TR 19768:2007 PDF

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Applications and who uses it

Related standards

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