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Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives.

** Things under legendu.net/outdated are outdated technologies that the author does not plan to update any more. Please look for better alternatives. **

RJDBC

data.table do not mix using of data.table and data.frame (too much).

plyr

sets

set operations,

  1. no need to sort and unique, R do this automatically in C++, you need to sort, and possibly unique if that’s what you need

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