polars math bitwise-count-ones

For dataframe.

warning This command requires a plugin The polars math bitwise-count-ones command resides in the polars plugin. To use this command, you must install and register nu_plugin_polars. See the Plugins chapter in the book for more information.

Command Type

plugin

Signature

> polars math bitwise-count-ones {flags}

Input/output types:

Examples

Count the number of set bits for each element in an integer column

> [[n]; [0] [1] [7] [255]] |
    polars into-df |
    polars select (polars col n | polars math bitwise-count-ones) |
    polars collect
╭───┬───╮
│ # │ n │
├───┼───┤
│ 0 │ 0 │
│ 1 │ 1 │
│ 2 │ 3 │
│ 3 │ 8 │
╰───┴───╯

Ported from nushell/nushell.github.io. Copyright (c) 2021 Nushell Project. MIT License.