How do you delete a column by name in data.table?

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  1. Understanding exactly when a data.table is a reference to (vs a copy of) another data.table
  2. Subset rows corresponding to max value by group using data.table
  3. Extract row corresponding to minimum value of a variable by group
  4. Group by multiple columns and sum other multiple columns
  5. Apply a function to every specified column in a data.table and update by reference
  6. Fastest way to replace NAs in a large data.table
  7. Left join using 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. Perform a semi-join with data.table
  14. data.table – select first n rows within group [duplicate]
  15. subsetting a data.table using != excludes NA too
  16. Adding new columns to a data.table by-reference within a function not always working
  17. Dynamic column names in data.table
  18. Convert *some* column classes in data.table
  19. from data table, randomly select one row per group
  20. Canonical tidyverse method to update some values of a vector from a look-up table
  21. Insert a row in a data.table
  22. rolling joins data.table in R
  23. Efficiently merging two data frames on a non-trivial criteria
  24. Using data.table i and j arguments in functions
  25. R data.table breaks in exported functions
  26. Applying a function to each row of a data.table
  27. Empty factors in “by” data.table
  28. How to use data.table within functions and loops?
  29. What you can do with a data.frame that you can’t with a data.table?
  30. data.table: anonymous function in j

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