docs-v2/content/v2.0/reference/flux/functions/strings/isdigit.md

title	description	menu	weight	related
strings.isDigit() function	The strings.isDigit() function tests if a single character string is a digit (0-9).	v2_0_ref name parent strings.isDigit Strings	301	/v2.0/reference/flux/functions/strings/isletter/

The strings.isDigit() function tests if a single-character string is a digit (0-9).

Output data type: Boolean

import "strings"

strings.isDigit(v: "A")

// returns false

Parameters

v

The single-character string to test.

Data type: String

Examples

Filter by columns with digits as values

import "strings"

data
  |> filter(fn: (r) => strings.isDigit(v: r.serverRef))