IsAlpha

Name	IsAlpha
Syntax	IsAlpha (String str)
Purpose	To check whether the specified character within a string, in the specified index position, is alphabetical.
Description	Checks whether specified character is alphabetic
Return Type	Boolean
Parameters	str [System.String] – String containing the character to test index [System.Int32] – Numerical position of the character in the string to test. If not specified, index is presumed to be 0

Example

In this example, we are passing the required parameters to the function transformation object using a Variables object.

Where,

str = 1a2b3c4d

index = 1

Right-click on the function transformation object and select Preview Output. You can see that Astera Data Stack has returned “True”, as the character in the specified numerical position is alphabetical.

Conversely, if we replace the index value with “0”, the output value will return the boolean value, “False”, as shown below: