Documentation

strings.index() function

strings.index() returns the index of the first instance of a substring in a string. If the substring is not present, it returns -1.

Function type signature
(substr: string, v: string) => int
For more information, see Function type signatures.

Parameters

v

(Required) String value to search.

substr

(Required) Substring to search for.

Examples

Find the index of the first occurrence of a substring

import "sampledata"
import "strings"

sampledata.string()
    |> map(fn: (r) => ({r with _value: strings.index(v: r._value, substr: "g")}))

View example input and output


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