std::list<T,Allocator>::list
list(); |
(1) | |
explicit list( const Allocator& alloc ); |
(2) | |
(3) | ||
explicit list( size_type count, const T& value = T(), |
(until C++11) | |
list( size_type count, const T& value, |
(since C++11) | |
(4) | ||
explicit list( size_type count ); |
(since C++11) (until C++14) |
|
explicit list( size_type count, const Allocator& alloc = Allocator() ); |
(since C++14) | |
template< class InputIt > list( InputIt first, InputIt last, |
(5) | |
list( const list& other ); |
(6) | |
list( const list& other, const Allocator& alloc ); |
(7) | (since C++11) |
list( list&& other ); |
(8) | (since C++11) |
list( list&& other, const Allocator& alloc ); |
(9) | (since C++11) |
list( std::initializer_list<T> init, const Allocator& alloc = Allocator() ); |
(10) | (since C++11) |
Constructs a new container from a variety of data sources, optionally using a user supplied allocator alloc.
[first, last)
.
This constructor has the same effect as list(static_cast<size_type>(first), static_cast<value_type>(last), a) if |
(until C++11) |
This overload participates in overload resolution only if |
(since C++11) |
The allocator is obtained as if by calling std::allocator_traits<allocator_type>::select_on_container_copy_construction( |
(since C++11) |
During class template argument deduction, only the first argument contributes to the deduction of the vector's |
(since C++23) |
During class template argument deduction, only the first argument contributes to the deduction of the vector's |
(since C++23) |
Contents |
[edit] Parameters
alloc | - | allocator to use for all memory allocations of this container |
count | - | the size of the container |
value | - | the value to initialize elements of the container with |
first, last | - | the range to copy the elements from |
other | - | another container to be used as source to initialize the elements of the container with |
init | - | initializer list to initialize the elements of the container with |
[edit] Complexity
[edit] Exceptions
Calls to Allocator::allocate may throw.
[edit] Notes
After container move construction (overload (8)), references, pointers, and iterators (other than the end iterator) to other
remain valid, but refer to elements that are now in *this. The current standard makes this guarantee via the blanket statement in [container.rev.reqmts]/17, and a more direct guarantee is under consideration via LWG 2321.
[edit] Example
#include <list> #include <string> #include <iostream> template<typename T> std::ostream& operator<<(std::ostream& s, const std::list<T>& v) { s.put('['); char comma[3] = {'\0', ' ', '\0'}; for (const auto& e : v) { s << comma << e; comma[0] = ','; } return s << ']'; } int main() { // C++11 initializer list syntax: std::list<std::string> words1 {"the", "frogurt", "is", "also", "cursed"}; std::cout << "words1: " << words1 << '\n'; // words2 == words1 std::list<std::string> words2(words1.begin(), words1.end()); std::cout << "words2: " << words2 << '\n'; // words3 == words1 std::list<std::string> words3(words1); std::cout << "words3: " << words3 << '\n'; // words4 is {"Mo", "Mo", "Mo", "Mo", "Mo"} std::list<std::string> words4(5, "Mo"); std::cout << "words4: " << words4 << '\n'; }
Output:
words1: [the, frogurt, is, also, cursed] words2: [the, frogurt, is, also, cursed] words3: [the, frogurt, is, also, cursed] words4: [Mo, Mo, Mo, Mo, Mo]
[edit] Defect reports
The following behavior-changing defect reports were applied retroactively to previously published C++ standards.
DR | Applied to | Behavior as published | Correct behavior |
---|---|---|---|
LWG 2193 | C++11 | the default constructor is explicit | made non-explicit |
[edit] See also
assigns values to the container (public member function) | |
assigns values to the container (public member function) |