[swift-users] Range<UInt64>.count can abort

[Jens Alfke]

> On Apr 16, 2016, at 12:53 PM, Dmitri Gribenko <gribozavr at gmail.com> wrote:
> 
> It needs to be a signed integer.  And a signed integer needs a distance type itself.

Yeah, there’s an infinite regress implied there, since a distance type has to be one bit larger than its source type.

The only plausible solution is bignums. Any talk of adding those to Swift?

—Jens
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