[swift-dev] Why no FloatingPointArithmeticType and DefaultInitializable protocols in stdlib?

[Dmitri Gribenko]

Hi Jens,

On Thu, Mar 17, 2016 at 6:36 PM, Jens Persson via swift-dev
<swift-dev at swift.org> wrote:
> Is there a reason why the standard library does not have a protocol like
> IntegerArithmeticType but for floating point types?

Improving numerics support in Swift is a part of a long-term plan.

> Also, I don't know how many times I've found the need for this:
> protocol DefaultInitializable { init() }

Because there isn't a useful algorithm you can write on top of such a
protocol.  It is even hard to write a doc comment for it -- what are
the semantics of calling that init?  What is the postcondition?

Dmitri

-- 
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