[swift-users] Decimal to Double?
davesweeris at mac.com
Mon Nov 28 11:15:09 CST 2016
> On Nov 28, 2016, at 09:48, Philippe Hausler via swift-users <swift-users at swift.org> wrote:
> This might be a bit nicer since that is relying on NSNumber bridges. You can bridge to NSDecimalNumber directly like this:
> (Decimal(1.0) as NSDecimalNumber).doubleValue
> (but perhaps we should consider adding initializers that follow the same pattern as Double that don’t have to bridge to solve the problem)
>> On Nov 28, 2016, at 2:40 AM, Alex Blewitt via swift-users <swift-users at swift.org> wrote:
>> You can wrap it with an NSDecimalNumber, and then cast it to a Double from there:
>>> On 28 Nov 2016, at 10:13, Rick Mann via swift-users <swift-users at swift.org> wrote:
>>> How do I get a Double from a Decimal?
>>> Rick Mann
>>> rmann at latencyzero.com
>>> swift-users mailing list
>>> swift-users at swift.org
>> swift-users mailing list
>> swift-users at swift.org
> swift-users mailing list
> swift-users at swift.org
Does NSDecimalNumber conform to the floating point literal whosywhatsit protocol? If not, wouldn't both of those examples just covert a Double to a decimal and back again? Would there be a purpose to that? Like maybe it'd get rounded differently or something?
Once you have an NSDecimalNumber variable, though, I don't know of any better way than that '.doubleValue' property you and Alex mentioned.
- Dave Sweeris
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