std::{{{1}}}::shrink_to_fit

 

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void shrink_to_fit();

Requests the removal of unused capacity.

It is a non-binding request to reduce the memory usage without changing the size of the sequence. It depends on the implementation whether the request is fulfilled.

Parameters

(none)

Type requirements

- T must meet the requirements of MoveInsertable into *this. (since C++11)

Return value

(none)

Complexity

At most linear in the size of the container.

Exceptions If an exception is thrown other than by the move constructor of a non-CopyInsertable T, there are no effects.

(since C++11)

Notes

In libstdc++, shrink_to_fit() is not available in C++98 mode.

Defect reports

The following behavior-changing defect reports were applied retroactively to previously published C++ standards.

DR	Applied to	Behavior as published	Correct behavior
LWG 850	C++98	std:: lacked explicit shrink-to-fit operations	provided
LWG 2033	C++11	1. T was not required to be MoveInsertable 2. the complexity requirement was missing	1. required 2. added

See also

size	returns the number of elements (public member function of std::{{{1}}})