std::inplace_vector<T,N>::capacity

 

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std::inplace_vector

Member types
Member functions
inplace_vector::inplace_vector inplace_vector::~inplace_vector    inplace_vector::operator= inplace_vector::assign inplace_vector::assign_range Size and capacity inplace_vector::empty inplace_vector::size inplace_vector::max_size inplace_vector::capacity inplace_vector::resize inplace_vector::reserve inplace_vector::shrink_to_fit Iterators inplace_vector::begininplace_vector::cbegin inplace_vector::endinplace_vector::cend inplace_vector::rbegininplace_vector::crbegin inplace_vector::rendinplace_vector::crend	Element access inplace_vector::at inplace_vector::operator[] inplace_vector::front inplace_vector::back inplace_vector::data Modifiers inplace_vector::clear inplace_vector::erase inplace_vector::swap inplace_vector::insert inplace_vector::insert_range inplace_vector::emplace inplace_vector::emplace_back inplace_vector::try_emplace_back inplace_vector::unchecked_emplace_back inplace_vector::push_back inplace_vector::try_push_back inplace_vector::unchecked_push_back inplace_vector::pop_back inplace_vector::append_range inplace_vector::try_append_range
Non-member functions
erase(std::inplace_vector)erase_if(std::inplace_vector) swap(std::inplace_vector)	operator==operator<=>

 

static constexpr size_type capacity() noexcept;		(since C++26)

Returns the capacity of the internal (inplace) storage. Equivalent to: return N;.

Parameters

(none)

Return value

The maximum number of elements the container is able to hold.

Complexity

Constant.

Notes

Because each std::inplace_vector<T, N> is a fixed-capacity container, the value returned by capacity equals N (which is also the value returned by max_size()).

Example

Run this code

#include <inplace_vector>
 
int main()
{
    constexpr std::inplace_vector<int, 4> v1;
    static_assert(v1.capacity() == 4 && v1.max_size() == 4);
 
    constexpr std::inplace_vector<int, 0> v2;
    static_assert(v2.capacity() == 0 && v2.max_size() == 0);
}

See also

max_size [static]	returns the maximum possible number of elements (public static member function)
size	returns the number of elements (public member function)
resize	changes the number of elements stored (public member function)
empty	checks whether the container is empty (public member function)
reserve [static]	reserves storage (public static member function)

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