std::from_range, std::from_range_t

 

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)

Metaprogramming library (C++11)

Diagnostics library

General utilities library

Strings library

Containers library

Iterators library

Ranges library (C++20)

Algorithms library

Numerics library

Localizations library

Input/output library

Filesystem library (C++17)

Regular expressions library (C++11)

Concurrency support library (C++11)

Technical specifications

Symbols index

External libraries

 

Ranges library

Range access
begin cbegin end cend	rbegin crbegin rend crend	size ssize data cdata	empty
Range conversions
to (C++23)
Range primitives
range_size_trange_difference_t range_value_t	range_reference_trange_const_reference_trange_rvalue_reference_t   (C++23)	iterator_tconst_iterator_tsentinel_t (C++23)
Dangling iterator handling
dangling	borrowed_iterator_t	borrowed_subrange_t
Range concepts
range borrowed_range    sized_range constant_range (C++23)	common_range view viewable_range	input_range output_range forward_range	bidirectional_range random_access_range contiguous_range
Views
view_interface	subrange
Factories
empty_viewviews::empty iota_viewviews::iota	single_viewviews::single cartesian_product_viewviews::cartesian_product (C++23)(C++23)	basic_istream_viewviews::istream repeat_viewviews::repeat (C++23)(C++23)
Adaptors
ref_view views::all_tviews::all common_viewviews::common reverse_viewviews::reverse as_const_viewviews::as_const (C++23)(C++23) as_rvalue_viewviews::as_rvalue (C++23)(C++23)   zip_viewviews::zip (C++23)(C++23) zip_transform_viewviews::zip_transform (C++23)(C++23)	owning_view take_viewviews::take take_while_viewviews::take_while drop_viewviews::drop drop_while_viewviews::drop_while adjacent_viewviews::adjacent (C++23)(C++23) views::pairwise (C++23) adjacent_transform_viewviews::adjacent_transform (C++23)(C++23)   views::pairwise_transform (C++23)	views::counted elements_viewviews::elements keys_viewviews::keys values_viewviews::values transform_viewviews::transform chunk_viewviews::chunk (C++23)(C++23) chunk_by_viewviews::chunk_by (C++23)(C++23) slide_viewviews::slide (C++23)(C++23)	filter_viewviews::filter split_viewviews::split lazy_split_viewviews::lazy_split join_viewviews::join join_with_viewviews::join_with (C++23)(C++23) enumerate_viewviews::enumerate (C++23)(C++23) stride_viewviews::stride (C++23)(C++23)
Range generators
std::generator (C++23)
Range adaptor objects
Range adaptor closure objects
Helper items
movable-box	non-propagating-cache	simple-view

 

Defined in header <ranges>
struct from_range_t { explicit from_range_t() = default; };		(since C++23)
inline constexpr std::from_range_t from_range {};		(since C++23)

std::from_range is a disambiguation tag that can be passed to the constructors of the suitable containers to indicate that the contained member is range constructed.

The corresponding type std::from_range_t can be used in the constructor's parameter list to match the intended tag.

See also

ranges::to (C++23)

constructs a new non-view object from an input range (function template)