dfr arg-unique for dataframe

Signature

> dfr arg-unique {flags}

Input/output types:

Examples

Returns indexes for unique values

> [12233] |dfr into-df|dfr arg-unique
╭───┬────────────╮
│# │ arg_unique │
├───┼────────────┤
│0│0│
│1│1│
│2│3│
╰───┴────────────╯

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