TrimExcess Method

Queue<T>.TrimExcess Method

[ This article is for Windows Phone 8 developers. If you’re developing for Windows 10, see the latest documentation. ]

Sets the capacity to the actual number of elements in the Queue<T>, if that number is less than 90 percent of current capacity.

Namespace:  System.Collections.Generic
Assembly:  System (in System.dll)

public void TrimExcess()

This method can be used to minimize a collection's memory overhead if no new elements will be added to the collection. The cost of reallocating and copying a large Queue<T> can be considerable, however, so the TrimExcess method does nothing if the list is at more than 90 percent of capacity. This avoids incurring a large reallocation cost for a relatively small gain.

This method is an O(n) operation, where n is Count.

To reset a Queue<T> to its initial state, call the Clear method before calling TrimExcess method. Trimming an empty Queue<T> sets the capacity of the Queue<T> to the default capacity.

Windows Phone OS

Supported in: 8.1, 8.0, 7.1, 7.0

Windows Phone

Show:
© 2017 Microsoft