System.Reactive.Disposables.SingleAssignmentDisposableValue
Represents a disposable resource which only allows a single assignment of its underlying disposable resource.
If an underlying disposable resource has already been set, future attempts to set the underlying disposable resource will throw an InvalidOperationException.
namespace System.Reactive.Disposables
{
public struct SingleAssignmentDisposableValue
{
public bool IsDisposed { get; }
public IDisposable Disposable { get; set; }
public void Dispose();
}
}