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isLowerCase(String): Boolean

Checks if the text contains only lowercase characters.

Introduced in DataWeave 2.2.0. Supported by Mule 4.2 and later.


Name Description


The input string.


This example shows how isNumeric behaves with different inputs and sizes.


%dw 2.0
import isLowerCase from dw::core::Strings
output application/json
  "a": isLowerCase(null),
  "b": isLowerCase(""),
  "c": isLowerCase("  "),
  "d": isLowerCase("abc"),
  "e": isLowerCase("aBC"),
  "f": isLowerCase("a c"),
  "g": isLowerCase("a1c"),
  "h": isLowerCase("a/c")


  "a": false,
  "b": false,
  "c": false,
  "d": true,
  "e": false,
  "f": false,
  "g": false,
  "h": false

isLowerCase(Null): Boolean

Helper function for isLowerCase so it works with null value.

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