void splice_after( const_iterator pos, forward_list& other ); | (1) | (since C++11) |
void splice_after( const_iterator pos, forward_list&& other ); | (1) | (since C++11) |
void splice_after( const_iterator pos, forward_list& other,
const_iterator it ); | (2) | (since C++11) |
void splice_after( const_iterator pos, forward_list&& other,
const_iterator it ); | (2) | (since C++11) |
void splice_after( const_iterator pos, forward_list& other,
const_iterator first, const_iterator last ); | (3) | (since C++11) |
void splice_after( const_iterator pos, forward_list&& other,
const_iterator first, const_iterator last ); | (3) | (since C++11) |
Moves elements from another forward_list to *this.
No elements are copied. pos is a valid iterator in *this or is the before_begin() iterator. The behavior is undefined if get_allocator() != other.get_allocator(). No iterators or references become invalidated, the iterators to the moved elements now refer into *this, not into other.
1) Moves all elements from
other into *this. The elements are inserted after the element pointed to by pos. The container other becomes empty after the operation. The behavior is undefined if this == &other 2) Moves the element pointed to by the iterator following
it from other into *this. The element is inserted after the element pointed to by pos. Has no effect if pos==it or if pos==++it. 3) Moves the elements in the range
(first, last) from other into *this. The elements are inserted after the element pointed to by pos. The element pointed-to by first is not moved. The behavior is undefined if pos is an iterator in the range (first,last).Parameters
| pos | - | element after which the content will be inserted |
| other | - | another container to move the content from |
| it | - | iterator preceding the iterator to the element to move from other to *this |
| first, last | - | the range of elements to move from other to *this |
Return value
(none).
Complexity
1) Linear in the size of
other 2) Constant
3) Linear in
std::distance(first, last) Example
Demonstrates the meaning of open interval (first, last) in the third form of splice_after(): the first element of l1 is not moved.
#include <iostream>
#include <forward_list>
int main()
{
std::forward_list<int> l1 = {1,2,3,4,5};
std::forward_list<int> l2 = {10,11,12};
l2.splice_after(l2.cbegin(), l1, l1.cbegin(), l1.cend());
// not equivalent to l2.splice_after(l2.cbegin(), l1);
for(int n : l1)
std::cout << n << ' ';
std::cout << '\n';
for(int n : l2)
std::cout << n << ' ';
std::cout << '\n';
}Output:
1 10 2 3 4 5 11 12
See also
| merges two sorted lists (public member function) | |
| removes elements satisfying specific criteria (public member function) |
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