public void RemoveResource(AbsractResource res)
{
if (res == comp)
{
comp = null;
}
else if (res == designer)
{
designer = null;
}
else if (res == algorithm)
{
algorithm = null;
}
else
{
throw new ArgumentException("No such element");
}
}
public void AddResource(AbsractResource res)
{
if (res is Computer && comp == null)
{
comp = (Computer)res;
}
else if (res is Designer && designer == null)
{
designer = (Designer)res;
}
else if (res is TracingAlgorythm && algorithm == null)
{
algorithm = (TracingAlgorythm)res;
}
else
{
throw new ArgumentException();
}
}