[swift-evolution] [Guidelines, First Argument Labels]: Prepositions inside the parens

Dave Abrahams dabrahams at apple.com
Thu Feb 11 13:57:40 CST 2016

on Thu Feb 11 2016, Douglas Gregor <dgregor-AT-apple.com> wrote:

>> On Feb 11, 2016, at 10:53 AM, Dave Abrahams via swift-evolution <swift-evolution at swift.org> wrote:
>> on Thu Feb 11 2016, Charles Kissinger <swift-evolution at swift.org> wrote:
>>> FWIW, I think these new guidelines strike a very nice balance between
>>> all of the competing concerns. The result of applying them to some of
>>> my own code could best be described as “different but not unpleasant”
>>> ;-)
>>> In looking over the diffs, one nice result I didn’t expect is that
>>> moving the prepositional phrases into the first argument label seems
>>> to increase the speed with which I absorb the general intent of a
>>> function -- the “at a glance” understanding -- by moving a “detail”
>>> (important as it might be) into the parameter list. (The split
>>> prepositional phrases had the opposite effect for me.)
>> That's nice!  What do you think about moving “of” back out of the
>> parens?  Does that help or hurt?
> And lo!, a diff appeared!
> 	https://github.com/apple/swift-3-api-guidelines-review/commit/3f965346f1edea804a9bc6223d2824f43687e92f

Hmm, looking at these I think it's really the “lonely ‘of’” that we want
to pull out of the parens, i.e.


but not

        animal(ofGenus: .reptile)


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