C++20 Backports

Backports from C++20.

A listing of some of the features backported:

• From core: Attributes likely and unlikely .
• From core: Attribute nodiscard with message.
• From <algorithm>: shift_left() , shift_right() .
• From <algorithm>: Consistent container erasure.
• From <algorithm>: constexpr for more functions.
• From <bit>: New header.
• From <bit>: std::endian.
• From <functional>: bind_front() , unwrap_reference .
• From <iterator>: ssize() .
• From <numeric>: midpoint() .
• From <string> , string_view: starts_with() , ends_with() .
• From <type_traits>: type_identity , remove_cvref .
• From <type_traits>: is_bounded_array , is_unbounded_array .
• From <utility>: Safe integral comparisons.

See also: C++17 Backports C++23 Backports .

Member cxxomfort::cxxostd::bind_front (Fn &&callable, Binds &&... args)

Wraps a function and its first n arguments as a callable.

Member cxxomfort::cxxostd::bit_width (U u) noexcept

Bit operations

Member cxxomfort::cxxostd::to_array (T(&arr)[N]) -> std::array< typename std::remove_cv< T >::type, N >

Creates a std::array from a native C array.

Member cxxomfort::fix::count (cxxomfort::constexpr_t const, It ini, It fin, T const &value) noexcept

Adding constexpr capability to std::count()

Member cxxomfort::fix::count_if (cxxomfort::constexpr_t const, It ini, It fin, Fn &&fn) noexcept

Adding constexpr capability to std::count_if()

Member cxxomfort::fix::find (cxxomfort::constexpr_t const, It ini, It fin, T const &value)

Adding constexpr capability to std::find()

Member cxxomfort::fix::find_if (cxxomfort::constexpr_t const, It ini, It fin, Fn &&fn)

Adding constexpr capability to std::find_if()

Member cxxomfort::std::endian

Endianness

Member std::bit_cast (From const &from)

Reinterpret the bit pattern of an object as an object of a different type.