26 Containers library [containers]

26.3 Sequence containers [sequences]

26.3.8 Class template deque [deque]

26.3.8.3 deque capacity [deque.capacity]

void resize(size_type sz);

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Effects: If sz < size(), erases the last size() - sz elements from the sequence. Otherwise, appends sz - size() default-inserted elements to the sequence.

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Requires: T shall be MoveInsertable and DefaultInsertable into *this.

void resize(size_type sz, const T& c);

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Effects: If sz < size(), erases the last size() - sz elements from the sequence. Otherwise, appends sz - size() copies of c to the sequence.

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Requires: T shall be CopyInsertable into *this.

void shrink_to_fit();

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Requires: T shall be MoveInsertable into *this.

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Effects: shrink_­to_­fit is a non-binding request to reduce memory use but does not change the size of the sequence. [ Note: The request is non-binding to allow latitude for implementation-specific optimizations.  — end note ] If an exception is thrown other than by the move constructor of a non-CopyInsertable T there are no effects.

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Complexity: Linear in the size of the sequence.

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Remarks: shrink_­to_­fit invalidates all the references, pointers, and iterators referring to the elements in the sequence as well as the past-the-end iterator.