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

[William Dillon]

As long as you can still provide an overriding value to only one of the defaulted parameters I probably wouldn't miss it.  I would hate to have to re-state the default value of all the parameters up to the one I want to change, though.

- Will

> On Mar 30, 2016, at 9:59 AM, 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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