SortedSet<T>.RemoveWhere(Predicate<T>) Method

public:
 int RemoveWhere(Predicate<T> ^ match);

public int RemoveWhere(Predicate<T> match);

member this.RemoveWhere : Predicate<'T> -> int

Public Function RemoveWhere (match As Predicate(Of T)) As Integer

Parameters

Returns

The number of elements that were removed from the SortedSet<T> collection.

Exceptions

Examples

The following example removes unwanted elements from a sorted set. This code example is part of a larger example provided for the SortedSet<T> class.

// Defines a predicate delegate to use
// for the SortedSet.RemoveWhere method.
private static bool IsDoc(string s)
{
 s = s.ToLower();
 return (s.EndsWith(".txt") ||
 s.EndsWith(".xls") ||
 s.EndsWith(".xlsx") ||
 s.EndsWith(".pdf") ||
 s.EndsWith(".doc") ||
 s.EndsWith(".docx"));
}

' Defines a predicate delegate to use
' for the SortedSet.RemoveWhere method.
Private Function IsDoc(s As String) As Boolean
 s = s.ToLower()
 Return s.EndsWith(".txt") OrElse 
 s.EndsWith(".doc") OrElse 
 s.EndsWith(".xls") OrElse
 s.EndsWith(".xlsx") OrElse
 s.EndsWith(".pdf") OrElse
 s.EndsWith(".doc") OrElse
 s.EndsWith(".docx")
End Function

// Remove elements that have non-media extensions.
// See the 'IsDoc' method.
Console.WriteLine("Remove docs from the set...");
Console.WriteLine($"\tCount before: {mediaFiles1.Count}");
mediaFiles1.RemoveWhere(IsDoc);
Console.WriteLine($"\tCount after: {mediaFiles1.Count}");

' Remove elements that have non-media extensions. See the 'IsDoc' method.
Console.WriteLine("Remove docs from the set...")
Console.WriteLine($"{vbTab}Count before: {mediaFiles1.Count}")
mediaFiles1.RemoveWhere(AddressOf IsDoc)
Console.WriteLine($"{vbTab}Count after: {mediaFiles1.Count}")

Remarks

match must not modify the SortedSet<T>. Doing so can cause unexpected results.

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