> On Aug 16, 2016, at 5:13 PM, David Sweeris <[email protected]> wrote:
> 
> Any proposal that expands the power of generic programming gets an almost 
> automatic +1 from me.
> 
> I can't think of any circumstances in which I wouldn't want to use ":==" 
> instead of ":". Are there any downsides to expanding ":" to mean what ":==" 
> does?
> 
> Incidentally, I kinda thought things either already worked like this, or 
> would work like this after generics were "completed", but I can't tell you 
> why I thought that.

Me neither, but the last time I proposed that, people stated that there were 
some cases where this could not work. No concrete examples were given, but I 
assume it probably has something to do with associated type wackiness. :== 
seems like a workable compromise to me.

https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160523/019510.html
 
<https://lists.swift.org/pipermail/swift-evolution/Week-of-Mon-20160523/019510.html>

Charles

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