Starting an iterator in the middle of a values list in a label-ordered RecordTrie

[gmossessian]

Hi Mike,

Thanks for building this wrapper and providing the additional Bytes and RecordTrie classes, they're great and extremely useful and have been largely easy to build additional features into.

I would like to implement a RecordTrie feature as follows: if there are key-value pairs (u'a', (1, N_1)), (u'a', (2, N_2)), (u'a',(3, N_3)), ..., (u'a', (i, N_i)), and I know that I only need the values stored in N_p through N_q. If i is very large (say, a million), calling my_list = my_trie[u'a'] is prohibitively slow, and so I would like to start the loop at the pth value, that is, at b_prefix = <bytes>u'a'.encode('utf8') + self._b_value_separator + <bytes>bytes(struct(">I", p)).

Of course, if I set Agent key to this, the loop will not continue on to (u'a', (p+1, N_{p+1})), and I cannot figure out how to "trick" the predictive search into continuing to loop past that specific prefix and on to anything with prefix simply <bytes>u'a'.encode('utf8') + self._b_value_separator without resetting the entire loop from the top.

Do you have any idea of how this might be accomplished, or if it is a limitation of the marisa-trie base library?

Thanks,
-George