ISO/IEC TS 19568:2017
Programming Languages — C++ Extensions for Library Fundamentals
ISO/IEC TS 19568:2017 describes extensions to the C++ Standard Library (1.2). These extensions are classes and functions that are likely to be used widely within a program and/or on the interface boundaries between libraries written by different organizations.
ISO/IEC TS 19568:2017 is non-normative. Some of the library components in this technical specification may be considered for standardization in a future version of C++, but they are not currently part of any C++ standard. Some of the components in this technical specification may never be standardized, and others may be standardized in a substantially changed form.
The goal of this technical specification is to build more widespread existing practice for an expanded C++ standard library. It gives advice on extensions to those vendors who wish to provide them.
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Contents
Foreword
1 General
1.1 Scope
1.2 Normative references
1.3 Namespaces, headers, and modifications to standard classes
1.4 Terms and definitions
1.5 Future plans (Informative)
1.6 Feature-testing recommendations (Informative)
2 Modifications to the C++ Standard Library
2.1 Uses-allocator construction
3 General utilities library
3.1 Utility components
3.1.1 Header
3.1.2 Class erased_type
3.2 Tuples
3.2.1 Header
3.2.2 Calling a function with a tuple of arguments
3.3 Metaprogramming and type traits
3.3.1 Header
3.3.2 Other type transformations
3.3.3 Logical operator traits
3.3.4 Detection idiom
3.4 Compile-time rational arithmetic
3.4.1 Header
3.5 Time utilities
3.5.1 Header
3.6 System error support
3.6.1 Header
3.7 Class template propagate_const
3.7.1 Class template propagate_const general
3.7.2 Header
3.7.3 propagate_const requirements on T
3.7.3.1 propagate_const requirements on class type T
3.7.4 propagate_const constructors
3.7.5 propagate_const assignment
3.7.6 propagate_const const observers
3.7.7 propagate_const non-const observers
3.7.8 propagate_const modifiers
3.7.9 propagate_const relational operators
3.7.10 propagate_const specialized algorithms
3.7.11 propagate_const underlying pointer access
3.7.12 propagate_const hash support
3.7.13 propagate_const comparison function objects
4 Function objects
4.1 Header
4.2 Class template function
4.2.1 function construct/copy/destroy
4.2.2 function modifiers
4.3 Searchers
4.3.1 Class template default_searcher
4.3.1.1 default_searcher creation functions
4.3.2 Class template boyer_moore_searcher
4.3.2.1 boyer_moore_searcher creation functions
4.3.3 Class template boyer_moore_horspool_searcher
4.3.3.1 boyer_moore_horspool_searcher creation functions
4.4 Function template not_fn
5 Optional objects
5.1 In general
5.2 Header
5.3 optional for object types
5.3.1 Constructors
5.3.2 Destructor
5.3.3 Assignment
5.3.4 Swap
5.3.5 Observers
5.4 In-place construction
5.5 No-value state indicator
5.6 Class bad_optional_access
5.7 Relational operators
5.8 Comparison with nullopt
5.9 Comparison with T
5.10 Specialized algorithms
5.11 Hash support
6 Class any
6.1 Header
6.2 Class bad_any_cast
6.3 Class any
6.3.1 any construct/destruct
6.3.2 any assignments
6.3.3 any modifiers
6.3.4 any observers
6.4 Non-member functions
7 string_view
7.1 Header
7.2 Class template basic_string_view
7.3 basic_string_view constructors and assignment operators
7.4 basic_string_view iterator support
7.5 basic_string_view capacity
7.6 basic_string_view element access
7.7 basic_string_view modifiers
7.8 basic_string_view string operations
7.8.1 Searching basic_string_view
7.9 basic_string_view non-member comparison functions
7.10 Inserters and extractors
7.11 Hash support
8 Memory
8.1 Header
8.2 Shared-ownership pointers
8.2.1 Class template shared_ptr
8.2.1.1 shared_ptr constructors
8.2.1.2 shared_ptr observers
8.2.1.3 shared_ptr casts
8.2.1.4 shared_ptr hash support
8.2.2 Class template weak_ptr
8.2.2.1 weak_ptr constructors
8.3 Type-erased allocator
8.4 Header
8.5 Class memory_resource
8.5.1 Class memory_resource overview
8.5.2 memory_resource public member functions
8.5.3 memory_resource protected virtual member functions
8.5.4 memory_resource equality
8.6 Class template polymorphic_allocator
8.6.1 Class template polymorphic_allocator overview
8.6.2 polymorphic_allocator constructors
8.6.3 polymorphic_allocator member functions
8.6.4 polymorphic_allocator equality
8.7 template alias resource_adaptor
8.7.1 resource_adaptor
8.7.2 resource_adaptor_imp constructors
8.7.3 resource_adaptor_imp member functions
8.8 Access to program-wide memory_resource objects
8.9 Pool resource classes
8.9.1 Classes synchronized_pool_resource and unsynchronized_pool_resource
8.9.2 pool_options data members
8.9.3 pool resource constructors and destructors
8.9.4 pool resource members
8.10 Class monotonic_buffer_resource
8.10.1 Class monotonic_buffer_resource overview
8.10.2 monotonic_buffer_resource constructor and destructor
8.10.3 monotonic_buffer_resource members
8.11 Alias templates using polymorphic memory resources
8.11.1 Header
8.11.2 Header
8.11.3 Header
8.11.4 Header
8.11.5 Header
8.11.6 Header
8.11.7 Header
8.11.8 Header
8.11.9 Header
8.11.10 Header
8.12 Non-owning pointers
8.12.1 Class template observer_ptr overview
8.12.2 observer_ptr constructors
8.12.3 observer_ptr observers
8.12.4 observer_ptr conversions
8.12.5 observer_ptr modifiers
8.12.6 observer_ptr specialized algorithms
8.12.7 observer_ptr hash support
9 Containers
9.1 Uniform container erasure
9.1.1 Header synopsis
9.1.2 Function template erase_if
9.1.3 Function template erase
9.2 Class template array
9.2.1 Header
9.2.2 Array creation functions
10 Iterators library
10.1 Header
10.2 Class template ostream_joiner
10.2.1 ostream_joiner constructor
10.2.2 ostream_joiner operations
10.2.3 ostream_joiner creation function
11 Futures
11.1 Header
11.2 Class template promise
11.3 Class template packaged_task
12 Algorithms library
12.1 Header
12.2 Search
12.3 Sampling
12.4 Shuffle
13 Numerics library
13.1 Generalized numeric operations
13.1.1 Header
13.1.2 Greatest common divisor
13.1.3 Least common multiple
13.2 Random number generation
13.2.1 Header
13.2.2 Utilities
13.2.2.1 Function template randint
14 Reflection library
14.1 Class source_location
14.1.1 Header
14.1.2 source_location creation
14.1.3 source_location field access
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Contents
Foreword
1 General
1.1 Scope
1.2 Normative references
1.3 Namespaces, headers, and modifications to standard classes
1.4 Terms and definitions
1.5 Future plans (Informative)
1.6 Feature-testing recommendations (Informative)
2 Modifications to the C++ Standard Library
2.1 Uses-allocator construction
3 General utilities library
3.1 Utility components
3.1.1 Header
3.1.2 Class erased_type
3.2 Tuples
3.2.1 Header
3.2.2 Calling a function with a tuple of arguments
3.3 Metaprogramming and type traits
3.3.1 Header
3.3.2 Other type transformations
3.3.3 Logical operator traits
3.3.4 Detection idiom
3.4 Compile-time rational arithmetic
3.4.1 Header
3.5 Time utilities
3.5.1 Header
3.6 System error support
3.6.1 Header
3.7 Class template propagate_const
3.7.1 Class template propagate_const general
3.7.2 Header
3.7.3 propagate_const requirements on T
3.7.3.1 propagate_const requirements on class type T
3.7.4 propagate_const constructors
3.7.5 propagate_const assignment
3.7.6 propagate_const const observers
3.7.7 propagate_const non-const observers
3.7.8 propagate_const modifiers
3.7.9 propagate_const relational operators
3.7.10 propagate_const specialized algorithms
3.7.11 propagate_const underlying pointer access
3.7.12 propagate_const hash support
3.7.13 propagate_const comparison function objects
4 Function objects
4.1 Header
4.2 Class template function
4.2.1 function construct/copy/destroy
4.2.2 function modifiers
4.3 Searchers
4.3.1 Class template default_searcher
4.3.1.1 default_searcher creation functions
4.3.2 Class template boyer_moore_searcher
4.3.2.1 boyer_moore_searcher creation functions
4.3.3 Class template boyer_moore_horspool_searcher
4.3.3.1 boyer_moore_horspool_searcher creation functions
4.4 Function template not_fn
5 Optional objects
5.1 In general
5.2 Header
5.3 optional for object types
5.3.1 Constructors
5.3.2 Destructor
5.3.3 Assignment
5.3.4 Swap
5.3.5 Observers
5.4 In-place construction
5.5 No-value state indicator
5.6 Class bad_optional_access
5.7 Relational operators
5.8 Comparison with nullopt
5.9 Comparison with T
5.10 Specialized algorithms
5.11 Hash support
6 Class any
6.1 Header
6.2 Class bad_any_cast
6.3 Class any
6.3.1 any construct/destruct
6.3.2 any assignments
6.3.3 any modifiers
6.3.4 any observers
6.4 Non-member functions
7 string_view
7.1 Header
7.2 Class template basic_string_view
7.3 basic_string_view constructors and assignment operators
7.4 basic_string_view iterator support
7.5 basic_string_view capacity
7.6 basic_string_view element access
7.7 basic_string_view modifiers
7.8 basic_string_view string operations
7.8.1 Searching basic_string_view
7.9 basic_string_view non-member comparison functions
7.10 Inserters and extractors
7.11 Hash support
8 Memory
8.1 Header
8.2 Shared-ownership pointers
8.2.1 Class template shared_ptr
8.2.1.1 shared_ptr constructors
8.2.1.2 shared_ptr observers
8.2.1.3 shared_ptr casts
8.2.1.4 shared_ptr hash support
8.2.2 Class template weak_ptr
8.2.2.1 weak_ptr constructors
8.3 Type-erased allocator
8.4 Header
8.5 Class memory_resource
8.5.1 Class memory_resource overview
8.5.2 memory_resource public member functions
8.5.3 memory_resource protected virtual member functions
8.5.4 memory_resource equality
8.6 Class template polymorphic_allocator
8.6.1 Class template polymorphic_allocator overview
8.6.2 polymorphic_allocator constructors
8.6.3 polymorphic_allocator member functions
8.6.4 polymorphic_allocator equality
8.7 template alias resource_adaptor
8.7.1 resource_adaptor
8.7.2 resource_adaptor_imp constructors
8.7.3 resource_adaptor_imp member functions
8.8 Access to program-wide memory_resource objects
8.9 Pool resource classes
8.9.1 Classes synchronized_pool_resource and unsynchronized_pool_resource
8.9.2 pool_options data members
8.9.3 pool resource constructors and destructors
8.9.4 pool resource members
8.10 Class monotonic_buffer_resource
8.10.1 Class monotonic_buffer_resource overview
8.10.2 monotonic_buffer_resource constructor and destructor
8.10.3 monotonic_buffer_resource members
8.11 Alias templates using polymorphic memory resources
8.11.1 Header
8.11.2 Header
8.11.3 Header
8.11.4 Header
8.11.5 Header
8.11.6 Header
8.11.7 Header
8.11.8 Header
8.11.9 Header
8.11.10 Header
8.12 Non-owning pointers
8.12.1 Class template observer_ptr overview
8.12.2 observer_ptr constructors
8.12.3 observer_ptr observers
8.12.4 observer_ptr conversions
8.12.5 observer_ptr modifiers
8.12.6 observer_ptr specialized algorithms
8.12.7 observer_ptr hash support
9 Containers
9.1 Uniform container erasure
9.1.1 Header synopsis
9.1.2 Function template erase_if
9.1.3 Function template erase
9.2 Class template array
9.2.1 Header
9.2.2 Array creation functions
10 Iterators library
10.1 Header
10.2 Class template ostream_joiner
10.2.1 ostream_joiner constructor
10.2.2 ostream_joiner operations
10.2.3 ostream_joiner creation function
11 Futures
11.1 Header
11.2 Class template promise
11.3 Class template packaged_task
12 Algorithms library
12.1 Header
12.2 Search
12.3 Sampling
12.4 Shuffle
13 Numerics library
13.1 Generalized numeric operations
13.1.1 Header
13.1.2 Greatest common divisor
13.1.3 Least common multiple
13.2 Random number generation
13.2.1 Header
13.2.2 Utilities
13.2.2.1 Function template randint
14 Reflection library
14.1 Class source_location
14.1.1 Header
14.1.2 source_location creation
14.1.3 source_location field access
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