dfr uppercase for dataframe

Signature

> dfr uppercase {flags}

Input/output types:

Examples

Modifies strings to uppercase

> [AbcaBcabC] |dfr into-df|dfr uppercase
╭───┬─────╮
│# │  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