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  4. Strings (dw::core::Strings)

  5. isAlpha

isAlpha

isAlpha(String): Boolean

Checks if the text contains only Unicode digits. A decimal point is not a Unicode digit and returns false.

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

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

Parameters

Name Description

text

The input string.

Example

This example shows how isNumeric 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")
}

Output

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

isAlpha(Null): Boolean

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