Sure thing. Yeah, ideally the bridging would be fixed, but at the least, correcting the documentation will be a good start. Will file, thanks.
Best, Chris Anderson > On Nov 11, 2016, at 5:55 PM, Tony Parker <anthony.par...@apple.com> wrote: > > Hi Chris, > > Can you file a radar or JIRA for us on this? It looks like something should > be fixed in the documentation at least, or perhaps in the bridging. > > - Tony > >> On Nov 11, 2016, at 1:46 PM, Chris Anderson via swift-users >> <swift-users@swift.org <mailto:swift-users@swift.org>> wrote: >> >> I'm having problems with the type conversion between a Swift `Decimal` and >> an Objective C `NSDecimalNumber`. >> >> If I have the Swift class: >> >> @objc class Exam: NSObject { >> var grade: Decimal = 90.0 >> } >> >> And try to use that Swift class in Objective C, >> >> Exam *exam = [[Exam alloc] init]; >> NSDecimalNumber *result = [[NSDecimalNumber zero] >> decimalNumberByAdding:grade.value]; >> >> I get the error: >> >> Sending 'NSDecimal' to parameter of incompatible type 'NSDecimalNumber * >> _Nonnull' >> >> as it seems like `grade` is being treated as an `NSDecimal` not an >> `NSDecimalNumber`. This seems incorrect as per >> https://developer.apple.com/reference/foundation/nsdecimalnumber >> <https://developer.apple.com/reference/foundation/nsdecimalnumber> it says >> >> "The Swift overlay to the Foundation framework provides the Decimal >> structure, which bridges to the NSDecimalNumber class. The Decimal value >> type offers the same functionality as the NSDecimalNumber reference type, >> and the two can be used interchangeably in Swift code that interacts with >> Objective-C APIs. This behavior is similar to how Swift bridges standard >> string, numeric, and collection types to their corresponding Foundation >> classes." >> >> So I'm not sure if 1) I'm doing something wrong. 2) there's an error in the >> documentation or 3) this is a Swift bug. Number 1 on that list is definitely >> the most likely, but I wanted to see what I’m missing here. >> >> I don't want to explicitly make the values in my Swift class >> `NSDecimalNumber` because then I cannot do simple arithmetic operations such >> as `+` without doing the whole ugly `decimalNumberByAdding` dance. >> >> Thanks for the help! >> >> Best, >> Chris Anderson >> _______________________________________________ >> swift-users mailing list >> swift-users@swift.org <mailto:swift-users@swift.org> >> https://lists.swift.org/mailman/listinfo/swift-users >
_______________________________________________ swift-users mailing list swift-users@swift.org https://lists.swift.org/mailman/listinfo/swift-users
