RetroSearch Browse

Home - News ( United States | United Kingdom | Italy | Germany ) - Football scores

Showing content from https://en.cppreference.com/w/cpp/language/../algorithm/../utility/pair/deduction_guides.html below:

deduction guides for std::pair - cppreference.com

C++ Compiler support Freestanding and hosted Language Standard library Standard library headers Named requirements Feature test macros (C++20) Language support library Concepts library (C++20) Diagnostics library Memory management library Metaprogramming library (C++11) General utilities library Containers library Iterators library Ranges library (C++20) Algorithms library Strings library Text processing library Numerics library Date and time library Input/output library Filesystem library (C++17) Concurrency support library (C++11) Execution control library (C++26) Technical specifications Symbols index External libraries [edit] Utilities library Language support Type support (basic types, RTTI) Library feature-test macros (C++20) Program utilities Variadic functions initializer_list

(C++11)

is_constant_evaluated

(C++20)

is_within_lifetime

(C++26)

source_location

(C++20)

Coroutine support (C++20) Contract support (C++26) Three-way comparison three_way_comparablethree_way_comparable_with

(C++20)(C++20)

strong_ordering

(C++20)

weak_ordering

(C++20)

partial_ordering

(C++20)

common_comparison_category

(C++20)

compare_three_way_result

(C++20)

compare_three_way

(C++20)

(C++20)

(C++20)

partial_order

(C++20)

compare_strong_order_fallback

(C++20)

compare_weak_order_fallback

(C++20)

compare_partial_order_fallback

(C++20)

is_eqis_ltis_lteq

(C++20)(C++20)(C++20)

is_neqis_gtis_gteq

(C++20)(C++20)(C++20)

General utilities Function objects Bit manipulation (C++20) C-style bit manipulation (C++26) bitset hash

(C++11)

Relational operators (deprecated in C++20) rel_ops::operator!=rel_ops::operator> rel_ops::operator<=rel_ops::operator>= Integer comparison functions cmp_equalcmp_lesscmp_less_than

(C++20)(C++20)(C++20)

cmp_not_equalcmp_greatercmp_greater_than

(C++20)(C++20)(C++20)

(C++20)

Swap and type operations swap ranges::swap

(C++20)

(C++14)

(C++11)

to_underlying

(C++23)

(C++11)

(C++23)

(C++11)

move_if_noexcept

(C++11)

(C++17)

Common vocabulary types pair tuple

(C++11)

(C++17)

any

(C++17)

(C++17)

(C++11)

tuple_element

(C++11)

(C++17)

make_from_tuple

(C++17)

(C++23)

[edit] std::pair Member functions pair::pair pair::operator= pair::swap

(C++11)

Non-member functions make_pair operator==operator!=operator<operator<=operator>operator>=operator<=>

(until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)

swap(std::pair)

(C++11)

get(std::pair)

(C++11)

Helper classes tuple_size<std::pair>

(C++11)

tuple_element<std::pair>

(C++11)

basic_common_reference<std::pair>

(C++23)

common_type<std::pair>

(C++23)

formatter<std::pair>

(C++23)

piecewise_construct_t

(C++11)

Deduction guides(C++17) [edit]

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.

[edit] 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
}

RetroSearch is an open source project built by @garambo | Open a GitHub Issue

Search and Browse the WWW like it's 1997 | Search results from DuckDuckGo

HTML: 3.2 | Encoding: UTF-8 | Version: 0.7.4