public virtual Vector<T> this[
	Func<T, bool> condition
] { get; set; }

Public Overridable Default Property Item ( 
	condition As Func(Of T, Boolean)
) As Vector(Of T)
	Get
	Set

public:
virtual property Vector<T>^ default[Func<T, bool>^ condition] {
	Vector<T>^ get (Func<T, bool>^ condition);
	void set (Func<T, bool>^ condition, Vector<T>^ value);
}

abstract Item : Vector<'T> with get, set
override Item : Vector<'T> with get, set