Stack<T>.TrimExcess Stack<T>.TrimExcess Stack<T>.TrimExcess Stack<T>.TrimExcess Method


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

 void TrimExcess();
public void TrimExcess ();
member this.TrimExcess : unit -> unit
Public Sub 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 Stack<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 Stack<T> to its initial state, call the Clear method before calling TrimExcess method. Trimming an empty Stack<T> sets the capacity of the Stack<T> to the default capacity.

Applies to

See Also