To read an R object saved in .rds format.

To read a delimited text file into a data frame.

To read a fixed-width file into a data frame.

To read a delimited text file into a data frame.

To read a TSV (tab-separated values) file into a data frame.

To read a CSV file into a data frame.

To separate cells that contain multiple values into multiple rows, duplicating all other data as necessary.

To replace missing values with specified values.

To drop rows containing missing values.

To fill missing values in a column with the most recent non-missing value.

To extract substrings from a character vector based on a regular expression pattern.

To create a complete set of combinations from the combinations of existing data.

To pivot data from long to wide format by spreading a key-value pair into multiple columns.

To pivot data from wide to long format by gathering multiple columns into key-value pairs.

To unnest a nested data frame column, expanding it into separate rows.

To create a nested data frame column, where each row contains a nested data frame or list.

To ensure that all combinations of values in specified columns are present in the data, filling in missing combinations with NA.

To unite multiple columns into a single column by concatenating their values.

To separate a single character column into multiple columns based on a delimiter.

To reshape data from long to wide format by spreading a key-value pair into multiple columns.