series.str.lastindexof.md

description	Obtain the position of the last found occurrence of a specified value in a string

Series.str.lastIndexOf

danfo.Series.str.lastIndexOf(str, options) [source]

Parameters	Type	Description	Default
str	string	the string to search for	""
options	Object	inplace: Whether to perform the operation in-place or not.	{ inplace: false }

Returns: Series

Example

{% tabs %} {% tab title="Node" %}

const dfd = require("danfojs-node")

let data = ['lower', 'CAPITALS', 'this is a sentence', 'SwApCaSe']
let sf = new dfd.Series(data)
sf.str.lastIndexOf("r").print()

{% endtab %}

{% tab title="Browser" %}

{% endtab %} {% endtabs %}

{% tabs %} {% tab title="Output" %}

╔═══╤══════════════════════╗
║   │ 0                    ║
╟───┼──────────────────────╢
║ 0 │ 4                    ║
╟───┼──────────────────────╢
║ 1 │ -1                   ║
╟───┼──────────────────────╢
║ 2 │ -1                   ║
╟───┼──────────────────────╢
║ 3 │ -1                   ║
╚═══╧══════════════════════╝

{% endtab %} {% endtabs %}