std::map::empty

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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

bool empty() const;

Checks if the container has no elements, i.e. whether begin() == end().

Contents 1 Parameters 2 Return value 3 Exceptions 4 Complexity 5 See also

[edit] Parameters

(none)

[edit] Return value

true if the container is empty, false otherwise

[edit] Exceptions

[edit] Complexity

Constant

See also

size	returns the number of elements (public member function)