private Tuple <ManagedGroup <TObject, TKey, TGroupKey>, bool> GetCache(TGroupKey key)
{
Optional <ManagedGroup <TObject, TKey, TGroupKey> > cache = _groupCache.Lookup(key);
if (cache.HasValue)
{
return(Tuple.Create(cache.Value, false));
}
var newcache = new ManagedGroup <TObject, TKey, TGroupKey>(key);
_groupCache[key] = newcache;
return(Tuple.Create(newcache, true));
}
private bool Equals(ManagedGroup <TObject, TKey, TGroupKey> other)
{
return(EqualityComparer <TGroupKey> .Default.Equals(_groupKey, other._groupKey));
}