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R | data.table

data.table is a fast and memory-efficient tabular data structure in the R collection of the same name. It performs much better in speed and memory usage than data.frame or tibble, and thus is useful for when doing work on large tables. The definition of "large" varies depending on the machine the table is being analyzed on, but typically it's the size at which the speed and memory usage of code involving the table become important considerations.

Note that data.table uses different data grammar than what's present in the popular dplyr package, as it is not part of the Tidyverse.

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