When should I use setDT() instead of data.table() to create a data.table?

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More Related Contents:

  1. Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
  2. Extract row corresponding to minimum value of a variable by group
  3. Group by multiple columns and sum other multiple columns
  4. dcast warning: ‘Aggregation function missing: defaulting to length’
  5. Fastest way to replace NAs in a large data.table
  6. Left join using data.table
  7. Summarizing multiple columns with data.table
  8. How can one work fully generically in data.table in R with column names in variables
  9. Faster version of combn
  10. Pass column name in data.table using variable [duplicate]
  11. What does .SD stand for in data.table in R
  12. Convert column classes in data.table
  13. Using lists inside data.table columns
  14. Perform a semi-join with data.table
  15. data.table – select first n rows within group [duplicate]
  16. subsetting a data.table using != excludes NA too
  17. Dynamic column names in data.table
  18. Efficient row-wise operations on a data.table
  19. Replace logical values (TRUE / FALSE) with numeric (1 / 0)
  20. Convert *some* column classes in data.table
  21. Canonical tidyverse method to update some values of a vector from a look-up table
  22. write.csv for large data.table
  23. rolling joins data.table in R
  24. R: how to rbind two huge data-frames without running out of memory
  25. Efficiently merging two data frames on a non-trivial criteria
  26. Convert a data frame to a data.table without copy
  27. Row sums over columns with a certain pattern in their name
  28. paste two data.table columns
  29. Removing multiple columns from R data.table with parameter for columns to remove
  30. Fill option for fread

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