nothrow-sentinel-for, nothrow-sized-sentinel-for

 

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

 

Algorithm library

Constrained algorithms and algorithms on ranges (C++20)
Constrained algorithms, e.g. ranges::copy, ranges::sort, ...
Non-modifying sequence operations     Batch operations for_each for_each_n (C++17) Search operations all_ofany_ofnone_of (C++11)(C++11)(C++11) countcount_if mismatch equal findfind_iffind_if_not (C++11) find_end find_first_of adjacent_find search search_n Modifying sequence operations Copy operations copycopy_if (C++11) copy_backward copy_n (C++11) move (C++11) move_backward (C++11) Swap operations swap iter_swap swap_ranges Transformation operations replacereplace_if transform replace_copyreplace_copy_if Generation operations fill fill_n generate generate_n Removing operations removeremove_if unique remove_copyremove_copy_if unique_copy Order-changing operations reverse reverse_copy rotate rotate_copy random_shuffleshuffle (until C++17)(C++11) shift_leftshift_right (C++20)(C++20) Sampling operations sample (C++17)	Sorting and related operations Partitioning operations partition partition_copy (C++11)     stable_partition is_partitioned (C++11)     partition_point (C++11) Sorting operations sort stable_sort partial_sort partial_sort_copy is_sorted (C++11) is_sorted_until (C++11) nth_element Binary search operations (on partitioned ranges) lower_bound upper_bound equal_range binary_search Set operations (on sorted ranges) includes set_union set_intersection          set_difference set_symmetric_difference Merge operations (on sorted ranges) merge inplace_merge Heap operations push_heap pop_heap make_heap sort_heap is_heap (C++11) is_heap_until (C++11) Minimum/maximum operations max min minmax (C++11) clamp (C++17) max_element min_element minmax_element (C++11) Lexicographical comparison operations lexicographical_compare lexicographical_compare_three_way (C++20) Permutation operations next_permutation prev_permutation is_permutation (C++11)	Execution policies (C++17) is_execution_policy (C++17) execution::seqexecution::parexecution::par_unseqexecution::unseq (C++17)(C++17)(C++17)(C++20) execution-policy (exposition only*)(C++26) execution::sequenced_policyexecution::parallel_policyexecution::parallel_unsequenced_policyexecution::parallel_unsequenced (C++17)(C++17)(C++17)(C++20) Numeric operations iota (C++11) inner_product      reduce (C++17) accumulate adjacent_difference transform_reduce (C++17) partial_sum inclusive_scan (C++17)     exclusive_scan (C++17) transform_inclusive_scan (C++17) transform_exclusive_scan (C++17) Specialized <memory> algorithms Specialized <random> algorithms ranges::generate_random (C++26) C library qsort bsearch

 

Specialized <memory> algorithms

Helper templates (exposition only*) voidify deref-move (C++17) nothrow-input-iteratornothrow-forward-iteratornothrow-bidirectional-iteratornothrow-random-access-iterator (C++20)(C++20)(C++26)(C++26) nothrow-sentinel-fornothrow-sized-sentinel-for (C++20)(C++26) nothrow-input-rangenothrow-forward-rangenothrow-bidirectional-rangenothrow-random-access-rangenothrow-sized-random-access-range (C++20)(C++20)(C++26)(C++26)(C++26) Object (batch) construction construct_at (C++20) uninitialized_copy uninitialized_fill uninitialized_move (C++17) uninitialized_copy_n (C++11) uninitialized_fill_n uninitialized_move_n (C++17) uninitialized_default_construct (C++17) uninitialized_default_construct_n (C++17)     uninitialized_value_construct (C++17) uninitialized_value_construct_n (C++17) ranges::construct_at (C++20) ranges::uninitialized_copy (C++20) ranges::uninitialized_fill (C++20) ranges::uninitialized_move (C++20) ranges::uninitialized_copy_n (C++20) ranges::uninitialized_fill_n (C++20) ranges::uninitialized_move_n (C++20) ranges::uninitialized_default_construct (C++20) ranges::uninitialized_default_construct_n (C++20) ranges::uninitialized_value_construct (C++20) ranges::uninitialized_value_construct_n (C++20) Object (batch) destruction destroy (C++17) destroy_n (C++17) destroy_at (C++17) ranges::destroy (C++20) ranges::destroy_n (C++20) ranges::destroy_at (C++20)

 

template< class S, class I > concept /*nothrow-sentinel-for*/ = std::sentinel_for<S, I>;	(1)	(exposition only*)
template< class I > concept /*nothrow-sized-sentinel-for*/ = /*nothrow-sentinel-for*/<S, I> && std::sized_sentinel_for<S, I>;	(2)	(since C++26) (exposition only*)

These exposition-only concepts specify that no exceptions are thrown from operations required by the specialized <memory> algorithms between iterators and sentinels.

Semantic requirements

1) Types S and I model nothrow-sentinel-for only if no exceptions are thrown from copy construction, move construction, copy assignment, move assignment, or comparisons between valid values of type I and S.

2) Types S and I model nothrow-sized-sentinel-for only if no exceptions are thrown from the - operator for valid values of type I and S.

Notes

These concepts allow some sentinel_for and sized_sentinel_for operations to throw exceptions.

See also

sentinel_for (C++20)	specifies a type is a sentinel for an input_or_output_iterator type (concept)
sized_sentinel_for (C++20)	specifies that the - operator can be applied to an iterator and a sentinel to calculate their difference in constant time (concept)