[swift-evolution] [swift-users] Replacement for NSNumber?

[Dave Abrahams]

on Mon Apr 11 2016, Ross O'Brien <swift-evolution at swift.org> wrote:

> Your pointing to two mutually exclusive protocols proves the point. If I want to
> write a generic function for a numerical type which can be added, I can't just
> require that the type conforms to IntegerArithmeticType because that excludes
> all the floating point types. Protocols for various numerical functions, e.g.
> NumericalArithmeticType, would be handy,

The upcoming proposals for integer and floating point protocols have a
common type called Arithmetic that serves this purpose.

>
>
> On Mon, Apr 11, 2016 at 4:55 PM, Joanna Carter via swift-evolution
> <swift-evolution at swift.org> wrote:
>
>     > It’s inconvenient that structs can’t inherit, and so things like Int and
>     Double aren’t known as numbers. Should there be a Number protocol that
>     encompasses all things number-like?
>
>     Taje a look at the IntegerType and FloatingPointType
>
>     --
>     Joanna Carter
>     Carter Consulting
>
>     (de mon iPhone)
>
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-- 
Dave