I just saw a cool new package rolling out: package int64 that supports 64-bit integer in R http://cran.r-project.org/web/packages/int64/index.html
I remember there was a wish for data.table to use 64-bit integer for key. Matthew was guessing there might exist a package somewhere that already supports 64-bit integer in R. I think this is exactly what we were looking for! This package looks pretty solid. The author has excellent reputation in R society and this program is sponsored by Google! A immediate drawback I see is that they use S4 class. I know it's painful to deal with S4. ?..Somehow I feel that Google will also be interested in sponsoring data.table package? I guess Google is interested in sponsoring int64 project because they were naturally facing the big-data problem. I think data.table's high-performance features also fit their interests, just like int64? :))) Best regards,
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