TriePrefix (gb.data)
This class provides a read-only view of part of a Trie. It lets you examine keys with a common prefix.
This class is not creatable.
This class acts like a array.
This class is with the FOR EACH keyword.
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Searches begin in the middle of the Trie and are thus faster (compared to
repeated lookups under the
same prefix).
TriePrefix objects are invalidated when you change the Trie, so be careful if you store them persistently.