[swift-evolution] [Discussion] Rename BitwiseOperations protocol

[Chris Lattner]

> On Jul 3, 2016, at 9:41 AM, Nevin Brackett-Rozinsky via swift-evolution <swift-evolution at swift.org> wrote:
> 
> I am still curious why the SE-0104 FixedWidthInteger protocol uses member functions like “.xor” rather than operators for bitwise manipulation.

The global operators are implemented in terms of those methods in the protocol.

-Chris

> 
> Nevin
> 
> On Fri, Jul 1, 2016 at 8:19 PM, Dave Abrahams via swift-evolution <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> 
> on Fri Jul 01 2016, Riley Testut <swift-evolution at swift.org <mailto:swift-evolution at swift.org>> wrote:
> 
> > Hi all,
> >
> > This is probably very minor, but I’m not sure the protocol name
> > “BitwiseOperations” fits the Swift API Design Guidelines. Here’s what
> > the guidelines have to say about protocol names:
> >
> > Protocols that describe what something is should read as nouns (e.g. Collection).
> >
> > Protocols that describe a capability should be named using the
> > suffixes able, ible, or ing (e.g. Equatable, ProgressReporting).
> >
> > From these two, BitwiseOperations appears to be (attempting) to follow
> > the first rule, yet “BitwiseOperations” doesn’t really describe what
> > the type is, but rather that it can do bitwise operations. The
> > documentation itself even describes the protocol as “a type that
> > supports standard bitwise arithmetic operators."
> >
> > I propose we rename it to “BitwiseOperable”, or something
> > similar. Again, a small change, but if this were to ever happen, I
> > think Swift 3 is the time.
> 
> BitwiseOperations should really be retired after
> https://github.com/apple/swift-evolution/blob/master/proposals/0104-improved-integers.md <https://github.com/apple/swift-evolution/blob/master/proposals/0104-improved-integers.md>
> is implemented, and its uses replaced by FixedWidthInteger.
> 
> --
> Dave
> 
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