dfr arg-true for dataframe

Signature

> dfr arg-true {flags}

Input/output types:

Examples

Returns indexes where values are true

> [falsetruefalse] |dfr into-df|dfr arg-true
╭───┬──────────╮
│# │ arg_true │
├───┼──────────┤
│0│1│
╰───┴──────────╯

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