dfr rename for dataframe or lazyframe

Rename a dataframe column.

Signature

> dfr rename

Examples

Renames a series

> [5 6 7 8] | dfr into-df | dfr rename '0' new_name
╭───┬──────────╮
│ # │ new_name │
├───┼──────────┤
│ 0 │        5 │
│ 1 │        6 │
│ 2 │        7 │
│ 3 │        8 │
╰───┴──────────╯

Renames a dataframe column

> [[a b]; [1 2] [3 4]] | dfr into-df | dfr rename a a_new
╭───┬───────┬───╮
│ # │ a_new │ b │
├───┼───────┼───┤
│ 0 │     1 │ 2 │
│ 1 │     3 │ 4 │
╰───┴───────┴───╯

Renames two dataframe columns

> [[a b]; [1 2] [3 4]] | dfr into-df | dfr rename [a b] [a_new b_new]
╭───┬───────┬───────╮
│ # │ a_new │ b_new │
├───┼───────┼───────┤
│ 0 │     1 │     2 │
│ 1 │     3 │     4 │
╰───┴───────┴───────╯