[header][other] utility

*[header][other] utility

<utility>

Utility components

This header contains utilities in unrelated domains:

• Pairs: objects that can hold two values of different types: pair, make_pair, piecewise_construct, piecewise_construct_t.
• Generic relational operators: Standard definitions for the relational operators !=, >, <= and >= under a specific namespace: rel_ops.
• Rvalue casts (C++11): Allow the generation of rvalue references: forward, move, move_if_noexcept, declval.
• Generic swap function: definition used by default by the components of the standard library for all types that do not provide their own overload: swap.

Functions

swap

Exchange values of two objects (function template )

make_pair

Construct pair object (function template )

forward 

Forward argument (function template )

move 

Move as rvalue (function template )

move_if_noexcept 

Move if noexcept (function template )

declval 

Declaration value (function template )

Types

pair

Pair of values (class template )

piecewise_construct_t 

Piecewise construct type (type )

Constants

piecewise_construct 

Piecewise construct constant (constant )

Namespaces

rel_ops

Relational Operators (namespace )

내용 출처 : http://www.cplusplus.com/reference/utility/