<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div>@Howard</div><div id="AppleMailSignature">I was thinking the same about the constraint.</div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">Does that mean that Never should be a subtype of Error (maybe it is already) ? Else you couldn't say throws(Never) or FSTore<Never></div><div id="AppleMailSignature"><br></div><div id="AppleMailSignature">@Howard</div><div id="AppleMailSignature">I'm not sure about <>, it should stay reserved for generics, IMHO.</div><div id="AppleMailSignature"><br>Pierre</div><div><br>Le 13 janv. 2017 à 01:11, Howard Lovatt via swift-users <<a href="mailto:swift-users@swift.org">swift-users@swift.org</a>> a écrit :<br><br></div><blockquote type="cite"><div><div dir="ltr">@Anton, Yes that would work and we would get typed throws, which I like. As an aside, I think E would have to be constrained to be an Error, `<E: Error>`, and maybe `throws<E>` reads better because you are used to types in angle brackets.</div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"> -- Howard.<br></div></div>
<br><div class="gmail_quote">On 13 January 2017 at 08:32, Anton Zhilin <span dir="ltr"><<a href="mailto:antonyzhilin@gmail.com" target="_blank">antonyzhilin@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr"><div class="m_6825551795680594501markdown-here-wrapper"><p style="margin:0px 0px 1.2em!important">The best way to deal with such situations should be typed throws. Then <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline">rethrows</code> should be removed and replaced with generics in <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline">throws</code> clause. <code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline">E == Never</code> ⇔ function does not throw.</p>
<pre style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;font-size:1em;line-height:1.2em;margin:1.2em 0px"><code style="font-size:0.85em;font-family:Consolas,Inconsolata,Courier,monospace;margin:0px 0.15em;padding:0px 0.3em;white-space:pre-wrap;border:1px solid rgb(234,234,234);background-color:rgb(248,248,248);border-radius:3px;display:inline;white-space:pre-wrap;overflow:auto;border-radius:3px;border:1px solid rgb(204,204,204);padding:0.5em 0.7em;display:block!important">struct FStore<E> {
let f: () throws(E) -> Void
init(_ f: @escaping () throws(E) -> Void) { self.f = f }
func call() throws(E) { try f() }
}
let store = FStore<Never>({ print("Hello") })
store.call()
</code></pre><p style="margin:0px 0px 1.2em!important">[Phase2]</p>
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</blockquote></div><br></div>
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