Namespaces
Variants
Views
Actions

std::ranges::chunk_view<V>::size

From cppreference.com
< cpp‎ | ranges‎ | chunk view
 
 
Ranges library
Range access
Range conversions
(C++23)

Range primitives



Dangling iterator handling
Range concepts
Views

Range factories
Range adaptors
Range generators
Range adaptor objects
Range adaptor closure objects
Helper items
(until C++23)(C++23)


 
std::ranges::chunk_view
Member functions
chunk_view::size
Classes for input_ranges
Deduction guides
outer-iterator
outer-iterator::value_type
inner-iterator
 
constexpr auto size() requires ranges::sized_range<V>;
(1) (since C++23)
constexpr auto size() const requires ranges::sized_range<const V>;
(2) (since C++23)

Returns the number of elements, which is the smallest integer value that is not less than the quotient of dividing the size of underlying view base_ by the underlying data member n_, that holds the number passed to the constructor (0 if default constructed). Equivalent to

return __to_unsigned_like(__div_ceil(ranges::distance(base_), n_));

Contents

[edit] Parameters

(none)

[edit] Return value

The number of elements.

[edit] Example

#include <ranges>
 
int main()
{
    constexpr static auto v = {1, 2, 3, 4, 5};
    constexpr auto w{ std::ranges::chunk_view(v, 2) };
    static_assert(w.size() == (5 / 2 + (5 % 2 ? 1 : 0)));
}

[edit] See also

returns an integer equal to the size of a range
(customization point object)[edit]
returns a signed integer equal to the size of a range
(customization point object)[edit]