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The description of the type parameters indicates "int: the type to be used for the new column: INT, LONG, FLOAT, DOUBLE, STRING, or CATEGORY".
What is the CATEGORY type please? How is it used? I've been googling my brains out to trying and find the answers to these question -- and I have looked at the source code for Table.java and I still cannot reverse engineer it well enough to understand what it is. (The author clearly doesn't like HashTables -- there's a class called HashTablesBlow! :) )
Thanks in advance for anyone who can explain it! Andy