std::map::emplace

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C++ Standard Library
Language Utilities library Strings library Containers library Algorithms library Iterators library Numerics library Input/output library Localizations library Regular expressions library (C++11) Atomic operations library (C++11) Thread support library (C++11)
Containers library
array (C++11) vector deque forward_list (C++11) list set multiset map multimap unordered_set (C++11) unordered_multiset (C++11) unordered_map (C++11) unordered_multimap (C++11) stack queue priority_queue
std::map
Member functions map::map map::~map map::operator= map::get_allocator Element access map::at map::operator[] Iterators map::begin map::cbegin (C++11) map::end map::cend (C++11) map::rbegin map::crbegin (C++11) map::rend map::crend (C++11) Capacity map::empty map::size map::max_size Modifiers map::clear map::insert map::emplace (C++11) map::emplace_hint (C++11) map::erase map::swap Lookup map::count map::find map::equal_range map::lower_bound map::upper_bound Observers map::key_comp map::value_comp

template <class... Args> std::pair<iterator, bool> emplace( Args&&... args );		(C++11 feature)

Inserts a new element to the container. The element is constructed in-place, i.e. no copy or move operations are performed. The constructor of the element type (value_type) is called as follows: the first argument is used to construct the key, the rest of the arguments are used to construct the value.

Contents 1 Parameters 2 Return value 3 Complexity 4 See also

[edit] Parameters

args

-

arguments to forward to the constructor of the element

[edit] Return value

returns a pair consisting of a bool denoting whether the insertion took place and an iterator to the inserted element.

[edit] Complexity

This section is incomplete

[edit] See also

emplace_hint (C++11)	constructs elements in-place using a hint (public member function)
insert	inserts elements (public member function)