isEmpty

Short summary

This assertion method checks if the current string stringToCheck is empty

Attention: All strings are handled as null terminated byte/word streams. For windows-1252 is end of the string 16#00 For UTF-16 is end of the string 16#00_00

Attention: Method uses ANY_STRING and for this it's not possible to use literals/constants, because for ANY types the compiler generates__SYSTEM.AnyType and __SYSTEM.AnyType contains a pointer

Parameters

Name	Type	Comment	Kind
stringToCheck	ANY_STRING	current string to check	input
message	AssertMessage	message if the assertion is false	input

Code

Declaration

METHOD isEmpty
VAR_INPUT
	(* current string to check *)
	stringToCheck	:ANY_STRING;
	(* message if the assertion is false *)
	message			:AssertMessage;
END_VAR