The following messages perform basic comparison operations between the recipient and parameter string values. These messages return an instance of the Boolean class except where noted. Two strings with the same content may not be the same object. Strings that are created directly in quotes or by manipulating string objects produce distinct objects. If you want to use a string object as an index in an IndexedList , you need to use the identical string to access the element from the list.
Several techniques are available to preserve string identity.
For example, suppose you wanted to rate each currency with an A, B, or C value.