std::vector::reserve

 

C++

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Regular expressions library (C++11)

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Containers library

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std::vector

Member functions

vector::vector

vector::~vector

vector::operator=

vector::assign

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Element access

vector::at

vector::operator[]

vector::front

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vector::data (C++11)

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vector::begin vector::cbegin (C++11)

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vector::rend vector::crend (C++11)

Capacity

vector::empty

vector::size

vector::max_size

vector::reserve

vector::capacity

vector::shrink_to_fit (C++11)

Modifiers

vector::clear

vector::insert

vector::emplace (C++11)

vector::erase

vector::push_back

vector::emplace_back (C++11)

vector::pop_back

vector::resize

vector::swap

 

void reserve( size_type size );

Sets the capacity of the container to at least size. New storage is allocated if necessary.

Parameters

size

-

new capacity of the container

Return value

(none)

Exceptions

std::length_error if size > max_size().

Complexity

linear in the size of the container

See also

capacity	returns the number of elements that can be held in currently allocated storage (public member function)