<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Mon, Jun 13, 2016 at 9:28 AM, Sean Heber <span dir="ltr"><<a href="mailto:sean@fifthace.com" target="_blank">sean@fifthace.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I’m just (probably obtusely) suggesting that there are different levels and styles of expression and that the existence of one does not render other styles invalid.<br>
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In relation to the “where” debate, the fact that you can express everything with “guard” or “if” as you can with “where” is not, in my mind, a strong argument against “where” because it ignores other more intangible aspects that are going to be a lot harder to quantify since they depend on the context of the problem, the surrounding code, the mindset of the writer, and the assumed mindset of the reader.<br>
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I don’t dispute that we *could* live without “where” - that is not the point. We could also live without classes or generics or any of a variety of other features - but why should we when we don’t have to?<br></blockquote><div><br></div><div>I'm not sure where this comes in. I was clarifying what I mean when I call a language construct 'expressive.' As I understand the term, `where` is not expressive, whereas classes and generics are expressive.</div><div> </div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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l8r<br>
<span class="HOEnZb"><font color="#888888">Sean<br>
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> On Jun 13, 2016, at 9:19 AM, Xiaodi Wu <<a href="mailto:xiaodi.wu@gmail.com">xiaodi.wu@gmail.com</a>> wrote:<br>
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> How do you mean? I don't follow.<br>
> On Mon, Jun 13, 2016 at 09:11 Sean Heber <<a href="mailto:sean@fifthace.com">sean@fifthace.com</a>> wrote:<br>
> > On Jun 13, 2016, at 9:05 AM, Xiaodi Wu via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br>
> ><br>
> > On Mon, Jun 13, 2016 at 8:58 AM, Charlie Monroe <<a href="mailto:charlie@charliemonroe.net">charlie@charliemonroe.net</a>> wrote:<br>
> > if-continue. But I gladly took upon for-in-where as soon as I found out about it since it's more expressive and simply is less typing.<br>
> ><br>
> > I don't think we use the term 'expressive' in the same way. I understand it to mean that permitting the expression of more things. But of course, `where` does only a subset of `guard...continue` or `if...continue`; thus, less expressive.<br>
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> The fact that you could simply use the words “I am happy” to express the concept of being happy does not mean that writing a complex poem that also conveys happiness should therefore be prohibited.<br>
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> l8r<br>
> Sean<br>
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