strings.isLower() function

strings.isLower() tests if a single-character string is lowercase.

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



(Required) Single-character string value to test.


Filter by columns with single-letter lowercase values

import "strings"

    |> filter(fn: (r) => strings.isLower(v: r._value))

View example input and output

Was this page helpful?

Thank you for your feedback!

Introducing InfluxDB 3.0

The new core of InfluxDB built with Rust and Apache Arrow. Available today in InfluxDB Cloud Dedicated.

Learn more

State of the InfluxDB Cloud Serverless documentation

The new documentation for InfluxDB Cloud Serverless is a work in progress. We are adding new information and content almost daily. Thank you for your patience!

If there is specific information you’re looking for, please submit a documentation issue.