integer a=10; system.debug(JSON.stringify(a));
Standard input is empty
Object: nil error: did not understand #a MessageNotUnderstood(Exception)>>signal (ExcHandling.st:254) UndefinedObject(Object)>>doesNotUnderstand: #a (SysExcept.st:1448) UndefinedObject>>executeStatements (prog:1)
./prog:2: expected expression