dfr lowercase for dataframe

Signature

> dfr lowercase {flags}

Input/output types:

Examples

Modifies strings to lowercase

> [AbcaBcabC] |dfr into-df|dfr lowercase
╭───┬─────╮
│# │  0  │
├───┼─────┤
│0│abc│
│1│abc│
│2│abc│
╰───┴─────╯

Tips: Dataframe commands were not shipped in the official binaries by default, you have to build it with --features=dataframe flag