polars str-slice

Slices the string from the start position until the selected length.

warning This command requires a plugin The polars str-slice 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 str-slice {flags} (start)

Flags

--length, -l {int}: Optional length.

Parameters

start: Start of slice.

Input/output types:

input	output
polars_expression	polars_expression
polars_selector	polars_expression
polars_dataframe	polars_dataframe
polars_lazyframe	polars_lazyframe

Examples

Creates slices from the strings in a specified column

> [[a]; [abcded] [abc321] [abc123]] | polars into-df | polars select (polars col a | polars str-slice 1 --length 2) | polars collect
╭───┬────╮
│ # │ a  │
├───┼────┤
│ 0 │ bc │
│ 1 │ bc │
│ 2 │ bc │
╰───┴────╯

Creates slices from the strings

> [abcded abc321 abc123] | polars into-df | polars str-slice 1 --length 2
╭───┬────╮
│ # │ 0  │
├───┼────┤
│ 0 │ bc │
│ 1 │ bc │
│ 2 │ bc │
╰───┴────╯

Creates slices from the strings without length

> [abcded abc321 abc123] | polars into-df | polars str-slice 1
╭───┬───────╮
│ # │   0   │
├───┼───────┤
│ 0 │ bcded │
│ 1 │ bc321 │
│ 2 │ bc123 │
╰───┴───────╯

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