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

 

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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<=>

 

template< container-compatible-range<T> R > constexpr void assign_range( R&& rg );		(since C++26)

Replaces elements in the container with a copy of each element in rg.

Each iterator in the range rg is dereferenced exactly once.

The behavior is undefined if rg overlaps with the container.

Parameters

rg	-	an input_range with reference type convertible to the element type of the container
Type requirements
- std::assignable_from<T&, ranges::range_reference_t<R>> must be modeled. Otherwise, the program is ill-formed.
- T must be EmplaceConstructible into the container from *ranges::begin(rg). Otherwise, the behavior is undefined.

Return value

(none)

Exceptions

• bad_alloc, if std::ranges::distance(rg) > capacity().
• Any exception thrown by initialization of inserted element.

Example

Run this code

#include <algorithm>
#include <cassert>
#include <initializer_list>
#include <inplace_vector>
#include <iostream>
#include <new>
 
int main()
{
    const auto source = {1, 2, 3};
    std::inplace_vector<int, 4> destination{4, 5};
    destination.assign_range(source);
    assert(std::ranges::equal(destination, source));
 
    try
    {
        const auto bad = {-1, -2, -3, -4, -5};
        destination.assign_range(bad); // throws: bad.size() > destination.capacity()
    }
    catch(const std::bad_alloc& ex)
    {
        std::cout << ex.what() << '\n';
    }
}

Possible output:

std::bad_alloc

See also

insert_range	inserts a range of elements (public member function)
append_range	adds a range of elements to the end (public member function)
assign	assigns values to the container (public member function)
operator=	assigns values to the container (public member function)