template< class... Args > void emplace_front( Args&&... args ); | (since C++11) |
Inserts a new element to the beginning of the container. The element is constructed through std::allocator_traits::construct, which typically uses placement-new to construct the element in-place at the location provided by the container. The arguments args... are forwarded to the constructor as std::forward<Args>(args)....
No iterators or references are invalidated.
Parameters
| args | - | arguments to forward to the constructor of the element |
| Type requirements | ||
- T (the container's element type) must meet the requirements of EmplaceConstructible. | ||
Return value
(none).
Complexity
Constant.
Exceptions
If an exception is thrown, this function has no effect (strong exception guarantee).
See also
| inserts an element to the beginning (public member function) |
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