Redirected from User Guides/myXML/User guide for OCL rules in XMLdation environment/Available methods for OCL base types/.charAt().charAt()
Description of the method
|Description:||This method returns the character located at the String's specified index. The string indexes start from zero.|
|OCL:||self.Id.charAt(1) = "A"|
|Description:||Example rule expects the position 1 (the second character in string) to contain "A".|
The XML snippets below would pass this check.
It is worth noting that when the character does not exist in the defined position, expression is not ran.
The other snippet below however would not pass this check.