public bool Remove(ThingBase thing)
{
lock (Lock)
{
// This will not throw an exception if the thing is not there.
return(_interalList.Remove(thing));
}
}
/// <summary>
/// Modifying the collection this method returns will have no effect on the underlying list of things.
/// </summary>
public ThingBase[] GetThingsArray()
{
lock (Lock)
{
var result = new ThingBase[_interalList.Count];
_interalList.CopyTo(result);
return(result);
}
}
/// <summary>
/// Adds the thing if it's not already there.
/// Returns null if it added the new thing or existing thing if there is something with the given id.
/// </summary>
public ThingBase AddIfMissing(ThingBase otherThing)
{
lock (Lock)
{
// Check if it already exists.
ThingBase existing = _interalList.Find(t => t.Id == otherThing.Id);
if (existing == null)
{
// It is not here yet - add it.
_interalList.Add(otherThing);
// Return null to incidate the thing was added.
return(null);
}
// There is already something with this id - return it.
return(existing);
}
}