dfr columns for dataframe

Signature

> dfr columns {flags}

Input/output types:

Examples

Dataframe columns

> [[ab]; [12] [34]] |dfr into-df|dfr columns
╭───┬───╮
│0│a│
│1│b│
╰───┴───╯

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