<div dir="ltr">I agree with Ben—this is something that should just work for all string literals, and those protocols shouldn't be reasons to introduce a different syntax. It would be even more confusing for users to have to understand under which contexts they could use either `+` or juxtaposition and under which contexts they could *only* use juxtaposition.<div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Tue, May 16, 2017 at 12:28 PM Ben Rimmington via swift-evolution <<a href="mailto:swift-evolution@swift.org">swift-evolution@swift.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
> On 16 May 2017, at 16:36, Gwendal Roué wrote:<br>
><br>
>> Le 16 mai 2017 à 16:58, Tony Allevato <<a href="mailto:tony.allevato@gmail.com" target="_blank">tony.allevato@gmail.com</a>> a écrit :<br>
>><br>
>> Regarding the C/Objective-C syntax, what would be the advantages over concatenating the strings with `+`?<br>
><br>
> The support for ExpressibleByStringLiteral and ExpressibleByStringInterpolation protocols.<br>
<br>
Would it be possible to have compile-time concatenation of *all* string literals using the `+` operator?<br>
<br>
// Written as:<br>
@available(*, unavailable, message: "Long strings can be bro" +<br>
"ken into two or more pieces.")<br>
// Compiled as:<br>
@available(*, unavailable, message: "Long strings can be broken into two or more pieces.")<br>
<br>
This could also be used with types such as StaticString, which don't have their own `+` operator.<br>
<br>
// Written as:<br>
let s: StaticString = "Long strings can be bro" +<br>
"ken into two or more pieces."<br>
// Compiled as:<br>
let s: StaticString = "Long strings can be broken into two or more pieces."<br>
<br>
-- Ben<br>
<br>
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</blockquote></div>