[swift-evolution] [Pitch] Enforce argument order for defaulted parameters

Developer devteam.codafi at gmail.com
Thu Mar 31 09:58:16 CDT 2016


~Robert Widmann

2016/03/31 10:26、Jeff Kelley via swift-evolution <swift-evolution at swift.org> のメッセージ:

> I have never taken advantage of this, personally. Given that there isn’t anything that this feature enables that can’t be done if it’s removed―aside from reordering arguments―I’d be in favor of removing it for simplicity’s sake.
> Jeff Kelley
> SlaunchaMan at gmail.com | @SlaunchaMan | jeffkelley.org
>> On Mar 30, 2016, at 12:59 PM, Joe Groff via swift-evolution <swift-evolution at swift.org> wrote:
>> Many people are surprised when they find out defaulted parameters can be reordered, unlike required arguments. This special case adds complexity to the language, and runs against our general trend of treating argument labels as a significant part of an API's name, and preferring a single way of writing API calls. I think it's worth revisiting this design choice―is the special case worth the complexity? How many people take advantage of default argument reordering?
>> -Joe
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