deduction guides for std::pair

< cpp‎ | utility‎ | pair
 
C++
 
Utilities library
Type support (basic types, RTTI, type traits)
Dynamic memory management
Error handling
Program utilities
Variadic functions
Library feature-test macros
Date and time
Function objects
(C++11)
(C++11)
(C++14)
Relational operators (deprecated in C++20)
Comparisons (C++20)
Common vocabulary types
(C++11)
(C++17)
(C++17)
(C++17)
(C++17)
(C++17)

Swap, forward and move
(C++14)
(C++11)
(C++11)
(C++11)
Elementary string conversions
(C++17)
(C++17)
(C++17)
Type operations
(C++11)
(C++17)
(C++17)
 
std::pair
Member functions
Non-member functions
(C++11)
Deduction guides(C++17)
Helper classes
(C++11)
(C++11)
 
Defined in header <utility>
template<class T1, class T2>
pair(T1, T2) -> pair<T1, T2>;
 (since C++17)

One deduction guide is provided for std::pair to account for the edge cases missed by the implicit deduction guides.

In particular, non-copyable arguments and array to pointer conversion

Example

Run this code
#include <utility>
 
int main()
{
    int a[2], b[3];
    std::pair p{a, b}; // explicit deduction guide is used in this case
}