NewTruncIndex creates a new TruncIndex and initializes with a list of IDs.

ErrEmptyPrefix is an error returned if the prefix was empty.

ErrIllegalChar is returned when a space is in the ID.

ErrNotExist is returned when ID or its prefix not found in index.

ErrAmbiguousPrefix is returned if the prefix was ambiguous (multiple ids for the prefix).

TruncIndex allows the retrieval of string identifiers by any of their unique prefixes.