< cpp‎ | container‎ | vector
Revision as of 17:18, 2 November 2012 by P12bot (Talk | contribs)

void resize( size_type count, T value = T() );
(until C++11)
void resize( size_type count );
(1) (since C++11)
void resize( size_type count, const value_type& value );
(2) (since C++11)

Resizes the container to contain count elements.

If the current size is greater than count, the container is reduced to its first count elements as if by repeatedly calling pop_back().

If the current size is less than count, additional elements are appended and initialized with copies of value.

(until C++11)

If the current size is less than count,

1) additional value-initialized elements are appended
2) additional copies of value are appended
(since C++11)



count - new size of the container
value - the value to initialize the new elements with
Type requirements
T must meet the requirements of DefaultConstructible and MoveInsertable in order to use overload (1).
T must meet the requirements of CopyInsertable in order to use overload (2).

Return value



Linear in the size of the container


If value-initialization is undesirable, for example, if the elements are of non-class type and zeroing out is not needed, it can be avoided by providing a custom Allocator::constuct.

See also

returns the number of elements
(public member function) [edit]
inserts elements
(public member function) [edit]
erases elements
(public member function) [edit]