STL Preview

Description

Use the latest STL implementation regardless of your C++ version (C++14 ~)

// All implementations are written under C++14 standard semantics
#include "preview/ranges.h"

auto map = preview::views::iota('A', 'E') | 
           preview::views::enumerate | 
           preview::ranges::to<std::map>(); // See notes about CTAD below

std::cout << map[0] << ' '
          << map[1] << ' '
          << map[2] << '\n';
// A B C

preview is standard-conforming, and is compatible with existing STL

// Pre-C++20 iterators are fully compatible
auto floats = std::istringstream{"1.1  2.2\t3.3\v4.4\f55\n66\r7.7  8.8"};
ranges::copy(views::istream<float>(floats), std::ostream_iterator<float>{std::cout, ", "});

// Complex ranges/iterators are also compatible with both pre C++20 and 
// post C++20 std::iterator_traits
auto r = preview::views::iota(0) |
      preview::views::take(10) |
      preview::views::filter([](auto x) { return x % 2 == 0; });

static_assert(std::is_same<
    std::iterator_traits<decltype(r.begin())>::reference,
    int
>::value, "");

Up to C++26 STL are available

void foo(preview::span<int>) {}

int main() {
  // span with C++26 standard
  foo({1, 2, 3});
  
  preview::variant<int, float, double> v{1.0f};
  v.visit([](auto x) {
    // member visit(): C++26 standard
  });
  
  // views::concat
  std::vector<char> v = {'h', 'e', 'l'};
  std::string s = "lo, ";
  preview::string_view sv = "world";
  std::list<char> l = {'!'};

  // hello, world!
  for (auto c : preview::views::concat(v, s, sv, l)) {
    std::cout << c;
  }
  
  // expected
  auto process = [](preview::string_view str) -> preview::expected<int, std::string> {
    return parse_number(str)
      .transform([](double v) { return static_cast<int>(v); })
      .transform_error([](parse_error e) {
        return e == parse_error::invalid_input ? "invalid input" : "overflow";
      });
  };
  std::cout << process("42").value_or(-1) << '\n;'; // 42
  std::cout << process("inf").value_or(-1) << '\n'; // -1
}

Compiler Support

Compiler	Minimum version tested	Maximum version tested
MSVC	19.29.30154.0 (Visual Studio 16 2019)	19.40.33811.0 (Visual Studio 17 2022)
gcc	9.5.0	13.1.0
clang	11.1.0	15.0.7
Apple clang	14.0.0.14000029	15.0.0.15000040 (Silicon)
Android NDK	r18 (clang 7.0)	r26 (clang 17.0.2)
Emscripten	3.1.20 (clang 16.0.0)	latest(3.1.61) (clang 19.0.0)

Build & Install

CMake

Copy this repository under your project and use add_subdirectory

add_subdirectory(path/to/preview)
target_link_libraries(your-project INTERFACE preview)

Non-CMake

Although it is not recommended, you can just copy & paste files under include/ into your project.

Note: Without CMake configuration, heuristic compiler/STL checks will be performed.

Installation

With the reason stated in Non-CMake, installation is possible but not recommended.

Implementation Status

Implementation available in C++14 ~ :

Header	Total		C++17	C++20	C++23	C++26


algorithm
array
bit
concepts
cstddef
expected
functional
iterator
memory
optional
random
ranges
span
string_view
tuple
type_traits
utility
variant

any
atomic
barrier
charconv
chrono
cmath
compare
coroutine	N/A
debugging
exception
execution
flat_map
flat_set
format
filesystem	N/A
hazard_pointer
inplace_vector
latch
linalg
mdspan
memory_resource
mutex
new
numbers
numeric
print
rcu
semaphore
shared_mutex
stop_token
string
source_location	N/A
syncstream
spanstream
stacktrace	N/A
text_encoding
thread
version

Detailed status

Features

Description

: C++YY standard implemented in C++XX
: C++YY standard, not implemented yet
If the implementation is impossible(i.e., needs compiler support / hardware info) it is marked as N/A
Some features are working in progress
Introduced: First introduced version
Revision: Behavior changed/updated version

Headers

`<algorithm>`

	Introduced	Revision
`search`
`clamp`
`for_each_n`
`sample`
`shift_left`
`shift_right`
`ranges::in_fun_result`
`ranges::in_in_result`
`ranges::in_out_result`
`ranges::in_in_out_result`
`ranges::in_out_out_result`
`ranges::min_max_result`
`ranges::in_found_result`
`ranges::in_value_result`
`ranges::out_value_result`
`ranges::all_of`
`ranges::any_of`
`ranges::none_of`
`ranges::for_each`
`ranges::for_each_n`
`ranges::count`
`ranges::count_if`
`ranges::mismatch`
`ranges::find`
`ranges::find_if`
`ranges::find_if_not`
`ranges::find_last`
`ranges::find_last_if`
`ranges::find_last_if_not`
`ranges::find_end`
`ranges::find_first_of`
`ranges::adjacent_find`
`ranges::search`
`ranges::search_n`
`ranges::contains`
`ranges::contains_subrange`
`ranges::starts_with`
`ranges::ends_with`
`ranges::fold_left`
`ranges::fold_left_first`
`ranges::fold_right`
`ranges::fold_right_last`
`ranges::fold_left_with_iter`
`ranges::fold_left_first_with_iter`
`ranges::copy`
`ranges::copy_if`
`ranges::copy_n`
`ranges::copy_backward`
`ranges::move`
`ranges::move_backward`
`ranges::fill`
`ranges::fill_n`
`ranges::transform`
`ranges::generate`
`ranges::generate_n`
`ranges::remove`
`ranges::remove_if`
`ranges::remove_copy`
`ranges::remove_copy_if`
`ranges::replace`
`ranges::replace_if`
`ranges::replace_copy`
`ranges::replace_copy_if`
`ranges::swap_ranges`
`ranges::reverse`
`ranges::reverse_copy`
`ranges::rotate`
`ranges::rotate_copy`
`ranges::shift_left`
`ranges::shift_right`
`ranges::sample`
`ranges::shuffle`
`ranges::unique`
`ranges::unique_copy`
`ranges::is_partitioned`
`ranges::partition`
`ranges::partition_copy`
`ranges::stable_partition`
`ranges::partition_point`
`ranges::is_sorted`
`ranges::is_sorted_until`
`ranges::sort`
`ranges::partial_sort`
`ranges::partial_sort_copy`
`ranges::stable_sort`
`ranges::nth_element`
`ranges::lower_bound`
`ranges::upper_bound`
`ranges::binary_search`
`ranges::equal_range`
`ranges::merge`
`ranges::inplace_merge`
`ranges::includes`
`ranges::set_difference`
`ranges::set_intersection`
`ranges::set_symmetric_difference`
`ranges::set_union`
`ranges::is_heap`
`ranges::is_heap_until`
`ranges::make_heap`
`ranges::push_heap`
`ranges::pop_heap`
`ranges::sort_heap`
`ranges::max`
`ranges::max_element`
`ranges::min`
`ranges::min_element`
`ranges::minmax`
`ranges::minmax_element`
`ranges::clamp`
`ranges::equal`
`ranges::lexicographical_compare`
`ranges::is_permutation`
`ranges::next_permutation`
`ranges::prev_permutation`

`<any>`

	Introduced	Revision
`any`
`bad_any_cast`
`swap(any)`
`make_any`
`any_cast`

`<array>`

	Introduced	Revision
`to_array`

`<atomic>`

	Introduced	Revision
`atomic_ref`
`atomic_signed_lock_free`
`atomic_unsigned_lock_free`
`atomic_wait`
`atomic_wait_explicit`
`atomic_notify_one`
`atomic_notify_all`
`atomic_flag_test`
`atomic_flag_test_explicit`
`atomic_flag_wait`
`atomic_flag_wait_explicit`
`atomic_flag_notify_one`
`atomic_flag_notifly_all`
`atomic_fetch_max`
`atomic_fetch_max_explicit`
`atomic_fetch_min`
`atomic_fetch_min_explicit`

`<barrier>`

	Introduced	Revision
`barrier`

`<bit>`

	Introduced	Revision
`endian`
`bit_cast`
`byteswap`
`has_single_bit`
`bit_ceil`
`bit_floor`
`bit_width`
`rotl`
`rotr`
`countl_zero`
`countl_one`
`countr_zero`
`countr_one`
`popcount`

`<charconv>`

	Introduced	Revision
`chars_format`
`from_chars_result`
`to_chars_result`
`from_chars`
`to_chars`

`<chrono>`

	Introduced	Revision
`std::chrono::duration`
`std::chrono::time_point`
`clock_time_conversion`
`is_clock`
`utc_clock`
`tai_clock`
`gps_clock`
`file_clock`
`local_t`
`last_spec`
`day`
`month`
`year`
`weekday`
`weekday_indexed`
`weekday_last`
`month_day`
`month_day_last`
`month_weekday`
`month_weekday_last`
`year_month`
`year_month_day`
`year_month_day_last`
`year_month_weekday`
`year_month_weekday_last`
`hh_mm_ss`
`tzdb`
`tzdb_list`
`tzdb_zone`
`get_tzdb`
`get_tzdb_list`
`reload_tzdb`
`remote_version`
`locate_zone`
`sys_info`
`local_info`
`choose`
`zoned_traits`
`zoned_time`
`time_zone_link`
`nonexistent_local_time`
`ambiguous_local_time`
`leap_second`
`leap_second_info`
`get_leap_second_info`
`is_am` `is_pm`
`make_12` `make_24`

`<cmath>`

	Introduced	Revision
`assoc_laguerre`
`assoc_legendre`
`beta`
`comp_ellint_1`
`comp_ellint_2`
`comp_ellint_3`
`cyl_bessel_i`
`cyl_bessel_j`
`cyl_bessel_k`
`cyl_neumann`
`ellint_1`
`ellint_2`
`ellint_3`
`expint`
`hermite`
`legendre`
`laguerre`
`riemann_zeta`
`sph_bessel`
`sph_legendre`
`sph_neumann`
`hypot(x, y, z)`

`<compare>`

N/A

`<concepts>`

	Introduced	Revision
`same_as`
`derived_from`
`convertible_to`
`common_reference_with`
`common_with`
`integral`
`signed_integral`
`unsigned_integral`
`floating_point`
`assignable_from`
`swappable`
`destructible`
`constructible_from`
`default_initializable`
`move_constructible`
`copy_constructible`
`equality_comparable`
`equality_comparable_with`
`totally_ordered`
`movable`
`copyable`
`semiregular`
`regular`
`invocable`
`regular_invocable`
`predicate`
`relation`
`equivalence_relation`
`strict_weak_order`
`ranges::swap`

`<coroutine>`

N/A

`<cstddef>`

	Introduced	Revision
`byte`
`to_integer`

`<debugging>`

	Introduced	Revision
`breakpoint`
`breakpoint_if_debugging`
`is_debugger_present`

`<exception>`

	Introduced	Revision
`uncaught_exceptions`	(N/A)

`<expected>`

	Introduced	Revision
`expected`
`unexpected`
`bad_expected_access`
`unexpect` `unexpect_t`

`<execution>`

N/A

`<flat_map>`

	Introduced	Revision
`flat_map`
`flat_multimap`
`sorted_unique` `sorted_unique_t`
`sorted_equivalent` `sorted_equivalent_t`

`<flat_set>`

	Introduced	Revision
`flat_set`
`flat_multiset`

`<format>`

	Introduced	Revision
`formatter`
`basic_format_parse_context`
`basic_format_context`
`basic_format_arg`
`basic_format_args`
`basic_format_string`
`format_error`
`format`
`format_to`
`format_to_n`
`formatted_size`
`vformat`
`vformat_to`
~~`visit_format_arg`~~		deprecated in C++26
`make_format_args`
`make_wformat_args`
`formattable`
`range_format`
`range_formatter`
`formatter<pair-or-tuple>`
`formatter<range>`
`format_kind`
`enable_nonlocking_formatter_optimization`
`runtime_format`

`<filesystem>`

N/A

`<functional>`

	Introduced	Revision
`default_searcher`
`boyer_moore_searcher`
`boyer_moore_horspool_searcher`
`invoke`
`invoke_r`
`not_fn`
`bind_front`
`bind_back`
`identity`
`unwrap_reference`
`unwrap_ref_decay`
`ranges::equal_to`...
`ranges::three_way`
`move_only_function`
`copyable_function`
`function_ref`

`<hazard_pointer>`

	Introduced	Revision
`hazard_pointer_obj_base`
`hazard_pointer`
`make_hazard_pointer`

`<inplace_vector>`

	Introduced	Revision
`inplace_vector`

`<iterator>`

	Introduced	Revision
`indirectly_readable`
`indirectly_writable`
`weakly_incrementable`
`incrementable`
`input_or_output_iterator`
`sentinel_for`
`sized_sentinel_for`
`input_iterator`
`output_iterator`
`forward_iterator`
`bidirectional_iterator`
`random_access_iterator`
`contiguous_iterator`	*
`indirectly_unary_invocable`
`indirectly_regular_unary_invocable`
`indirect_unary_predicate`
`indirect_binary_predicate`
`indirect_equivalence_relation`
`indirect_strict_weak_order`
`indirectly_movable`
`indirectly_movable_storable`
`indirectly_copyable`
`indirectly_copyable_storable`
`indirectly_swappable`
`indirectly_comparable`
`permutable`
`mergeable`
`sortable`
`indirect_result_t`
`projected`		*
`projected_value_t`
`incrementable_traits`
`indirectly_readable_traits`
`iter_value_t` `iter_reference_t`
`iter_const_reference_t`
`iter_difference_t`
`iter_rvalue_reference_t`
`iter_common_reference_t`
`iterator_traits`
`move_sentinel`
`basic_const_iterator`
`const_iterator`
`const_sentinel`
`common_iterator`
`default_sentinel_t` `default_sentinel`
`counted_iterator`
`unreachable_sentinel_t` `unreachable_sentinel`
`iter_move`
`iter_swap`
`make_const_iterator` `make_const_sentinel`
`ranges::advance`
`ranges::distance`
`ranges::next`
`ranges::prev`
`size(C)`
`ssize(C)`
`empty(C)`
`data(C)`

Notes
- contiguous_iterator<I>
  - May incorrectly evaluates to true for some random_access_iterator if I::iterator_category does not satisfy derived_from<contiguous_iterator_tag>(typically before C++20)
  - Following pre-C++20 iterators explicitly evaluates to false
    - std::vector<bool>::xxx_iterator
    - std::deque<T>::xxx_iterator
- projected
  - Indirect layer doesn't work without using concepts. Check projectable before using projected directly.

`<latch>`

	Introduced	Revision
`latch`

`<linalg>`

	Introduced	Revision
`layout_blas_packed`
`scaled_accessor`
`conjugated_accessor`
`layout_transpose`
`column_major` `column_major_t`
`row_major` `row_major_t`
`upper_triangle` `upper_triangle_t`
`lower_triangle` `lower_triangle_t`
`implicit_unit_diagonal` `implicit_unit_diagonal_t`
`explicit_unit_diagonal` `explicit_unit_diagonal_t`
`scaled`
`conjugated`
`transposed`
`conjugated_transposed`
`setup_givens_rotation`
`apply_givens_rotation`
`swap_elements`
`scale`
`copy`
`add`
`dot` `dotc`
`vector_sum_of_squares`
`vector_two_norm`
`vector_abs_sum`
`vector_idx_abs_max`
`matrix_frob_norm`
`matrix_one_norm`
`matrix_inf_norm`
`matrix_vector_product`
`symmetric_matrix_vector_product`
`hermitian_matrix_vector_product`
`triangular_matrix_vector_product`
`triangular_matrix_vector_solve`
`matrix_rank_1_update`
`matrix_rank_1_update_c`
`symmetric_matrix_rank_1_update`
`hermitian_matrix_rank_1_update`
`symmetric_matrix_rank_2_update`
`hermitian_matrix_rank_2_update`
`matrix_product`
`symmetric_matrix_product`
`hermitian_matrix_product`
`triangular_matrix_product`
`triangular_matrix_left_product`
`triangular_matrix_right_product`
`symmetric_matrix_rank_k_update`
`hermitian_matrix_rank_k_update`
`symmetric_matrix_rank_2k_update`
`hermitian_matrix_rank_2k_update`
`triangular_matrix_matrix_left_solve`
`triangular_matrix_matrix_right_solve`

`<mdspan>`

	Introduced	Revision
`mdspan`
`extents`
`layout_left`
`layout_right`
`layout_stride`
`layout_stride`
`submdspan`
`submdspan_extents`
`strided_slice`
`submdspan_mapping_result`
`full_extent` `full_extent_t`

`<memory>`

	Introduced	Revision
`pointer_traits`
`aligned_alloc`
`destroy_at`
`destroy`
`destroy_n`
`reinterpret_pointer_cast`
`uninitialized_default_construct`
`uninitialized_default_construct_n`
`uninitialized_move`
`uninitialized_move_n`
`uninitialized_value_construct`
`uninitialized_value_construct_n`
`atomic<shared_ptr>`
`atomic<unique_ptr>`
`assume_aligned`
`construct_at`
`make_shared_for_overwrite`
`make_unique_for_overwrite`
`allocate_shared_for_overwrite`
`to_address`
`uses_allocator_construction_args`
`make_obj_using_allocator`
`uninitialized_construct_using_allocator`
`operator<<(std::unique_ptr)`
`ranges::construct_at`
`ranges::destroy`
`ranges::destroy_n`
`ranges::destroy_at`
`ranges::uninitialized_copy`
`ranges::uninitialized_copy_n`
`ranges::uninitialized_fill`
`ranges::uninitialized_fill_n`
`ranges::uninitialized_move`
`ranges::uninitialized_move_n`
`ranges::uninitialized_default_construct`
`ranges::uninitialized_default_construct_n`
`ranges::uninitialized_value_construct`
`ranges::uninitialized_value_construct_n`
`allocation_result`
`inout_ptr` `inout_ptr_t`
`out_ptr` `out_ptr_t`
`start_lifetime_as` `start_lifetime_as_array`
`owner_hash`
`owner_equal`

`<memory_resource>`

N/A

`<mutex>`

	Introduced	Revision
`scoped_lock`

`<new>`

	Introduced	Revision
`align_val_t`
`hardware_destructive_interference_size`
`hardware_constructive_interference_size`
`launder`
`destroying_delete` `destroying_delete_t`

`<numbers>`

	Introduced	Revision
`e`
`log2e`
`log10e`
`pi`
`inv_pi`
`inv_sqrtpi`
`ln2`
`ln10`
`sqrt2`
`sqrt3`
`inv_sqrt3`
`egamma`
`phi`

`<numeric>`

	Introduced	Revision
`exclusive_scan`
`transform_exclusive_scan`
`inclusive_scan`
`transform_inclusive_scan`
`gcd`
`lcm`
`reduce`
`transform_reduce`
`midpoint`
`ranges::iota`
`add_sat`
`sub_sat`
`mul_sat`
`div_sat`
`saturate_cast`

`<print>`

	Introduced	Revision
`print`
`println`
`vprint_unicode`
`vprint_unicode_buffered`
`vprint_nonunicode`
`vprint_nonunicode_buffered`

`<optional>`

	Introduced	Revision
`optional`
`bad_optional_access`
`std::hash<optional>`
`nullopt`
`nullopt_t`
`swap(optional)`
`make_optional`

`<random>`

	Introduced	Revision
`uniform_random_bit_generator`

`<ranges>`

	Introduced	Revision
`ranges::range`
`ranges::borrowed_range`
`ranges::sized_range`
`ranges::view`
`ranges::input_range`
`ranges::output_range`
`ranges::forward_range`
`ranges::bidirectional_range`
`ranges::random_access_range`
`ranges::contiguous_range`
`ranges::common_range`
`ranges::viewable_range`
`ranges::constant_range`
`ranges::to`	*
`ranges::iterator_t`
`ranges::const_iterator_t`
`ranges::sentinel_t`
`ranges::const_sentinel_t`
`ranges::range_difference_t`
`ranges::range_size_t`
`ranges::range_value_t`
`ranges::range_refernce_t`
`ranges::range_const_reference_t`
`ranges::range_rvalue_reference_t`
`ranges::range_common_reference_t`
`ranges::view_interface`
`ranges::subrange`
`ranges::dangling`
`ranges::borrowed_iterator_t`
`ranges::borrowed_subrange_t`
`ranges::range_adaptor_closure`
`ranges::empty_view` `views::empty`
`ranges::single_view` `views::single`
`ranges::iota_view` `views::iota`
`ranges::iota_view` `views::iota`
`ranges::basic_istream_view` `views::istream`
`ranges::repeat_view` `views::repeat`
`ranges::cartesian_product_view` `views::cartesian_product`
`views::all_t` `views::all`
`ranges::ref_view`
`ranges::owning_view`
`ranges::filter_view` `views::filter`
`ranges::transform_view` `views::transform`
`ranges::take_view` `views::take`
`ranges::take_while_view` `views::take_while`
`ranges::drop_view` `views::drop`
`ranges::drop_while_view` `views::drop_while`
`ranges::join_view` `views::join`
`ranges::lazy_split_view` `views::lazy_split`
`ranges::split_view` `views::split`
`views::counted`
`ranges::common_view` `views::common`
`ranges::reverse_view` `views::reverse`
`ranges::as_const_view` `views::as_const`
`ranges::as_rvalue_view` `views::as_rvalue`
`ranges::elements_view` `views::elements`
`ranges::keys_view` `views::keys`
`ranges::values_view` `views::values`
`ranges::enumerate_view` `views::enumerate`
`ranges::zip_view` `views::zip`
`ranges::zip_transform_view` `views::zip_transform`
`ranges::adjacent_view` `views::adjacent`
`ranges::adjacent_transform_view` `views::adjacent_transform`
`ranges::join_with_view` `views::join_with`
`ranges::stride_view` `views::stride`
`ranges::slide_view` `views::slide`
`ranges::chunk_view` `views::chunk`
`ranges::chunk_by_view` `views::chunk_by`
`ranges::concat_view` `views::concat`
`ranges::begin`
`ranges::end`
`ranges::cbegin`
`ranges::cend`
`ranges::crbegin`
`ranges::crend`
`ranges::size`
`ranges::ssize`
`ranges::empty`
`ranges::data`
`ranges::cdata`
`ranges::subrange_kind`
`ranges::from_range_t` `ranges::from_range`

Notes
ranges::to
- CTAD for Args... may be incorrect before C++17
- Equipped with C++23 conversions(e.g., pair-like -> std::pair)

`<rcu>`

	Introduced	Revision
`rcu_obj_base`
`rcu_domain`
`rcu_default_domain`
`rcu_synchronize`
`rcu_barrier`
`rcu_retire`

`<semaphore>`

	Introduced	Revision
`counting_semaphore`
`binary_semaphore`

`<shared_mutex>`

	Introduced	Revision
`shared_mutex`

`<stop_token>`

	Introduced	Revision
`stop_token`
`stop_source`
`stop_callback`
`nostopstate_t`
`nostopstate`

`<string>`

	Introduced	Revision
`erase(std::basic_string)`
`erase_if(std::basic_string)`

`<string_view>`

	Introduced	Revision
`basic_string_view`
`std::hash<basic_string_view>`
`swap(optional)`
`operator""_sv`

`<source_location>`

N/A

	Introduced	Revision
`source_location`

`<syncstream>`

	Introduced	Revision
`basic_syncbuf`
`basic_osyncstream`
`std::swap(basic_syncbuf)`

`<span>`

	Introduced	Revision
`span`
`dynamic_extent`
`as_bytes`
`as_writable_bytes`

`<spanstream>`

	Introduced	Revision
`basic_spanbuf`
`basic_ispanstream`
`basic_ospanstream`
`basic_spanstream`

`<stacktrace>`

	Introduced	Revision
`stacktrace_entry`
`basic_stacktrace`
`hash<stracktrace_entry>`
`hash<basic_stacktrace>`

`<text_encoding>`

	Introduced	Revision
`text_encoding`

`<thread>`

	Introduced	Revision
`jthread`

`<tuple>`

	Introduced	Revision
`apply`
`make_from_tuple`

`<type_traits>`

	Introduced	Revision
`common_type`
`bool_constant`
`has_unique_object_representations`	N/A
`is_aggregate`	N/A
`is_swappable_with` `is_swappable`...
`is_invocable`
`invoke_result`
`void_t`
`conjunction`
`disjunction`
`negation`
`common_reference` `basic_common_reference`
`is_bounded_array`
`is_unbounded_array`
`is_scoped_enum`	N/A
`is_constant_evaluated`	N/A
`is_corresponding_member`	N/A
`is_layout_compatible`	N/A
`is_nothrow_convertible`
`is_pointer_interconvertible_base_of`	N/A
`is_pointer_interconvertible_with_class`	N/A
`remove_cvref`
`type_identity`
`is_implicit_lifetime`	N/A
`is_within_lifetime`	N/A
`is_virtual_base_of`

`<utility>`

	Introduced	Revision
`as_const`
`in_place` `in_place_t`
`cmp_equal`...
`in_range`
`forward_like`
`to_underlying`
`unreachable`	N/A
`nontype` `nontype_t`

`<variant>`

	Introduced	Revision
`variant`
`monostate`
`bad_variant_access`
`variant_size`
`variant_alternative`
`std::hash<variant>`
`variant_npos`
`visit`
`get_if`

`<version>`

	Introduced	Revision

Name		Name	Last commit message	Last commit date
Latest commit History 69 Commits
.github/workflows		.github/workflows
cmake		cmake
include/preview		include/preview
test		test
.gitignore		.gitignore
CMakeLists.txt		CMakeLists.txt
LICENSE.txt		LICENSE.txt
README.md		README.md
logo.png		logo.png

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lackhole/stl-preview

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STL Preview

Description

Compiler Support

Build & Install

CMake

Non-CMake

Installation

Implementation Status

Detailed status

Features

Headers

<algorithm>

<any>

<array>

<atomic>

<barrier>

<bit>

<charconv>

<chrono>

<cmath>

<compare>

<concepts>

<coroutine>

<cstddef>

<debugging>

<exception>

<expected>

<execution>

<flat_map>

<flat_set>

<format>

<filesystem>

<functional>

<hazard_pointer>

<inplace_vector>

<iterator>

<latch>

<linalg>

<mdspan>

<memory>

<memory_resource>

<mutex>

<new>

<numbers>

<numeric>

<print>

<optional>

<random>

<ranges>

ranges::to

<rcu>

<semaphore>

<shared_mutex>

<stop_token>

<string>

<string_view>

<source_location>

<syncstream>

<span>

<spanstream>

<stacktrace>

<text_encoding>

<thread>

<tuple>

<type_traits>

<utility>

<variant>

<version>

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Stars

Watchers

`<algorithm>`

`<any>`

`<array>`

`<atomic>`

`<barrier>`

`<bit>`

`<charconv>`

`<chrono>`

`<cmath>`

`<compare>`

`<concepts>`

`<coroutine>`

`<cstddef>`

`<debugging>`

`<exception>`

`<expected>`

`<execution>`

`<flat_map>`

`<flat_set>`

`<format>`

`<filesystem>`

`<functional>`

`<hazard_pointer>`

`<inplace_vector>`

`<iterator>`

`<latch>`

`<linalg>`

`<mdspan>`

`<memory>`

`<memory_resource>`

`<mutex>`

`<new>`

`<numbers>`

`<numeric>`

`<print>`

`<optional>`

`<random>`

`<ranges>`

`ranges::to`

`<rcu>`

`<semaphore>`

`<shared_mutex>`

`<stop_token>`

`<string>`

`<string_view>`

`<source_location>`

`<syncstream>`

`<span>`

`<spanstream>`

`<stacktrace>`

`<text_encoding>`

`<thread>`

`<tuple>`

`<type_traits>`

`<utility>`

`<variant>`

`<version>`

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