public QueryId AddQuery(Query <TComponentKindSet> query)
{
if (_queryIdByQuery.TryGetValue(query, out var found))
{
return(found);
}
var queryId = _queryId;
_queryIdByQuery.Add(query, queryId);
_queryByQueryId[queryId] = query;
_queryId++;
return(queryId);
}
static int?Get(CompactDictionary <string, int> x, string s) => x.TryGetValue(s, out var v) ? v : default(int?);
