dfr arg-true for dataframe

Returns indexes where values are true.

Signature

> dfr arg-true

Input/output types:

input	output
any	any

Examples

Returns indexes where values are true

> [false true false] | 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