isAlpha

isAlpha(text: String): Boolean

Checks if the text contains only Unicode digits. This excludes digits, punctuation, and other nonletter characters.

Note that the method does not allow for a leading sign, either positive or negative.

Introduced in DataWeave version 2.2.0.

Parameters

Name Description

Name	Description
`text`	The input string.

text

The input string.

Example

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

Source

%dw 2.0
import isAlpha from dw::core::Strings
output application/json
---
{
  "a": isAlpha(null),
  "b": isAlpha(""),
  "c": isAlpha("  "),
  "d": isAlpha("abc"),
  "e": isAlpha("ab2c"),
  "f": isAlpha("ab-c")
}DataWeave

Output

{
  "a": false,
  "b": false,
  "c": false,
  "d": true,
  "e": false,
  "f": false
}JSON

isAlpha(text: Null): Boolean

Helper function that enables isAlpha to work with a null value.

Introduced in DataWeave version 2.2.0.