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New Features in data.table

John MacKintosh takes us through what’s new in R’s data.table package:

The newest version of data.table has hit CRAN, and there are lots of great new features.

Among them, a %notin% function, a new let function that can be used instead of := ( I wasn’t too fussed about this originally but have tried it a few times today and I may well adopt it – although I do like that := really stands out in my code when assigning / updating variables).

Read on for the big changes. H/T R-Bloggers.

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