/// <summary>
/// Subscribe to this feed for only the specified symbols.
/// </summary>
/// <param name="symbols">The list of symbols that the observer will observe.</param>
/// <param name="observer">A class object that implements the <see cref="IObserver{T}"/> interface.</param>
/// <returns>An <see cref="IDisposable"/> implementation that can be used to cancel the subscription.</returns>
public virtual IDisposable Subscribe(IObserver <T> observer, IEnumerable <string> symbols)
{
lock (observations)
{
foreach (var obs in observations)
{
if (obs.Observer == observer)
{
return(obs);
}
}
var obsNew = new SymbolObservation <T>(symbols, this, observer);
observations.Add(obsNew);
return(obsNew);
}
}
/// <summary>
/// Subscribe to this feed.
/// </summary>
/// <param name="observer">A class object that implements the <see cref="IObserver{T}"/> interface.</param>
/// <returns>An <see cref="IDisposable"/> implementation that can be used to cancel the subscription.</returns>
public override IDisposable Subscribe(IObserver <T> observer)
{
lock (observations)
{
foreach (var obs in observations)
{
if (obs.Observer == observer)
{
return(obs);
}
}
var obsNew = new SymbolObservation <T>(this, observer);
observations.Add(obsNew);
return(obsNew);
}
}