> On 25 Jun 2015, at 16:50, [email protected] wrote:
>
>
>> On 2015/06/25, at 15:49, Britt Durbrow
>> <[email protected]> wrote:
>>
>> IMHO, named parameters at call sites are one of the things that makes
>> Objective-C great; and I am VERY happy that Swift-2 enforces this.
>
> I agree whole heartedly.
> But will call out that it is a considered and thoughtful design by Cocoa and
> Foundation Framework engineers. Objective-C doesn't require it.
> Look at the old Next manual... There were a few obtuse methods.
>
> The IDE takes the burden of typing away.
> The conventions established help promote good coding practices that enable
> clarity and reduce mistakes and confusion.
> The (general) consistency and effort towards consistency those folks work
> towards is for everyone who codes to do it better.
> For themselves to more easily support developers consuming the APIs and end
> customers to have better quality products.
I like where it ended up with Swift 2.0. In a vacuum I would possibly have gone
for all parameters named and not 'all but the first one’ (with some exceptions
for constructors) but I see how we got there and it does fit the
transliteration of API from ObjC to Swift. And that standard transliteration,
especially in the latest Swift, has made switching from ObjC to Swift much
easier so I’m all for bringing that function naming convention over.
I think one of the patterns I had to learn to make it work was naming functions
like you do in objective C. I had no problem in that language doing
-(Felony*)doSomethingWithJello:(Jello*)jello
peaShooter:(PeaShooter*)peaShooter batmanMask:(BatmanMask*)batmanMask;
when I first started writing Swift it looked like C to me, so my function name
just became the verb and I got this
func doSomething( jello : Jello, peaShooter : PeaShooter, batmanMask :
BatmanMask )->Felony
and when you have that it does’t make sense you don’t need to name the Jello.
Once I started naming the functions in the same way I would have done the
original objC one, it all made more sense
func doSomethingWithJello( jello : Jello, peaShooter : PeaShooter,
batmanMask : BatmanMask )->Felony
On the odd occasion that I write more C-name-like functions then I usually
double up the first parameter so they are all named when you call them. And if
I have an initialiser which can only obviously take one argument, especially
with generics where the argument is often ‘initialValue’, I underscore it away.
95% of the time I find I follow the conventions however and code is pretty
readable. Similarly so is other people’s.
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