Use `setorder()` in `arrange()` when there is an implicit or explicit copy

tidyverse / dtplyr

Data table backend for dplyr

https://dtplyr.tidyverse.org

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Use `setorder()` in `arrange()` when there is an implicit or explicit copy #374

Closed markfairbanks closed 2 years ago

markfairbanks commented 2 years ago

Closes #364

Note: In the issue linked I mentioned always using setorder() (and using an explicit copy where necessary), but this seemed more data.table-like (and is also more memory efficient). I'm open to discussing this approach though.