swap(x[0], x[1]); // same as std::vector<bool>::swap(x[0], x[1]); println("after swap, x: ", x); println("swap elements of two different vectors:"); std::vector<bool> y{0, 0, 1}; println("before swap, x: ", x); println("before swap, y: ", y); y.swap(x...
如果std::allocator_traits<allocator_type>::propagate_on_container_swap::value 是true,那么就会用对非成员 swap 的无限定调用进行分配器的交换。否则,不交换它们(且在 get_allocator() != other.get_allocator() 时行为未定义)。 (C++11 起)参数...
constexprvoidswap(vector&other)noexcept(/* see below */); (since C++20) Exchanges the contents and capacity of the container with those ofother. Does not invoke any move, copy, or swap operations on individual elements. All iterators and references remain valid. Theend()iterator is invalidated...
swap,std::swapend() clear,operator=,assignAlways. reserve,shrink_to_fitIf the vector changed capacity, all of them. If not, none. eraseErased elements and all elements after them (includingend()). push_back,emplace_backIf the vector changed capacity, all of them. If not, onlyend(). ...
swap、std::swapend() clear、operator=、assign始终 reserve、shrink_to_fitvector 更改容量时全部失效。否则不失效。 erase被擦除元素及之后的所有元素(包括end())。 push_back、emplace_backvector 更改容量时全部失效。否则只有end()。 insert、emplacevector 更改容量时全部失效。否则只有在或于插入点后者(包括...
classSolution {public:intremoveElement(vector<int>& nums,intval) {if( nums.size()==0)return0;intlast = nums.size()-1;while( nums[last]==val && last>0) last--;for(inti=0; i<=last; ++i ) {if( nums[i]==val ) { std::swap(nums[i], nums[last]); ...
map 不为空的实现；标准库的一些其他容器是能保证被移动构造给另一个对象后一定为空的，比如vector（...
Using swapexchanges the contents of two containers of the same type. After the call to swap, the elements in the two containers are interchanged: vector<string> svec1(10); // vector with ten elements vector<string> svec2(24); // vectorwith 24 elements swap(svec1, svec2)...
STL containers are template classes that implement various ways of storing elements and accessing them. Sequence containers: vector deque list Container adaptors: stack queue priority_queue Associative containers: set multiset map multimap bitset See http://www.cplusplus.com/reference/stl/ for more info...
40. Std::swap() only invalidates the iterators on std::string. It does not invalidate iterators on other types of containers. They are pointing to the same elements in the swapped container. 41. Forward_list does not have size(). (I do not know why exactly) ...