std::list::max_size

 

C++

Language

Standard library headers

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Utilities library

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Numerics library

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Regular expressions library (C++11)

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Thread support library (C++11)

Filesystem library (C++17)

Technical Specifications

 

Containers library

array (C++11)

vector

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forward_list (C++11)

list

set

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multimap

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unordered_multiset (C++11)

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unordered_multimap (C++11)

stack

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std::list

Member functions

list::list

list::~list

list::operator=

list::assign

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::emplace (C++11)

list::erase

list::push_front

list::emplace_front (C++11)

list::pop_front

list::push_back

list::emplace_back (C++11)

list::pop_back

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Operations

list::merge

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list::removelist::remove_if

list::reverse

list::unique

list::sort

 

size_type max_size() const;

Returns the maximum number of elements the container is able to hold due to system or library implementation limitations, i.e. std::distance(begin(), end()) for the largest container.

Parameters

(none)

Return value

Maximum number of elements.

Exceptions

(none)	(until C++11)
noexcept specification:   noexcept	(since C++11)

Complexity

Constant.

Notes

This value typically reflects the theoretical limit on the size of the container. At runtime, the size of the container may be limited to a value smaller than max_size() by the amount of RAM available.

Example

Run this code

#include <iostream>
#include <list>
 
int main()
{
    std::list<char> s;
    std::cout << "Maximum size of a 'list' is " << s.max_size() << "\n";
}

Possible output:

Maximum size of a 'list' is 18446744073709551615

See also

size	returns the number of elements (public member function)