NSExpression contains the following mysterious information:
"All methods must take 0 or more id arguments and return an id value, although
you can use the CAST expression to convert datatypes with lossy string
representations (for example, CAST(####, "NSDate")). The CAST
expression is extended in Mac OS X v10.5 to provide support for casting
to classes for use in creating receivers for function expressions."
The Predicate programming guide doesn't seem to shed any more light on it.
Can anybody tell me any more about the mysterious CAST expressions?
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