public virtual T PopFront<T>()
where T : struct, new()

Public Overridable Function PopFront(Of T As {Structure, New}) As T

public:
generic<typename T>
where T : value class, gcnew()
virtual T PopFront()

abstract PopFront : unit -> 'T  when 'T : struct, new()
override PopFront : unit -> 'T  when 'T : struct, new()