std::list<T,Allocator>::emplace_front

 

C++

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Feature test macros (C++20)

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Containers library

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array (C++11)

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list

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stack

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std::list

Member functions

list::list

list::~list

list::operator=

list::assign

list::assign_range (C++23)

list::get_allocator

Element access

list::front

list::back

Iterators

list::beginlist::cbegin (C++11)

list::endlist::cend (C++11)

list::rbeginlist::crbegin (C++11)

list::rendlist::crend (C++11)

Capacity

list::empty

list::size

list::max_size

Modifiers

list::clear

list::insert

list::insert_range (C++23)

list::emplace (C++11)

list::erase

list::push_front

list::emplace_front (C++11)

list::prepend_range (C++23)

list::pop_front

list::push_back

list::emplace_back (C++11)

list::append_range (C++23)

list::pop_back

list::resize

list::swap

Operations

list::merge

list::splice

list::removelist::remove_if

list::reverse

list::unique

list::sort

Non-member functions

std::swap

eraseerase_if (C++20)(C++20)

operator==operator!=operator<operator>operator<=operator>=operator<=> (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)(C++20)

Deduction guides(C++17)

 

template< class... Args > void emplace_front( Args&&... args );		(since C++11) (until C++17)
template< class... Args > reference emplace_front( Args&&... args );		(since C++17)

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)	(until C++17)
A reference to the inserted element.	(since C++17)

Complexity

Constant.

Exceptions

If an exception is thrown for any reason, this function has no effect (strong exception safety guarantee).

See also

push_front

inserts an element to the beginning (public member function)