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.error { color:#AA0000; }</style></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;"><div class="bloop_markdown"><p>Where is your problem here? It’s simple and easy ;)</p>
<pre><code class="swift">extension Integer {
init(_ boolean: Bool) {
self = boolean ? 1 : 0
}
}
Int(10 > 4)
UInt32(1 <= 2)
</code></pre>
<p></p></div><div class="bloop_original_html"><style>body{font-family:Helvetica,Arial;font-size:13px}</style><div id="bloop_customfont" style="font-family:Helvetica,Arial;font-size:13px; color: rgba(0,0,0,1.0); margin: 0px; line-height: auto;"><br></div> <br> <div id="bloop_sign_1479772571293469952" class="bloop_sign"><div style="font-family:helvetica,arial;font-size:13px">-- <br>Adrian Zubarev<br>Sent with Airmail</div></div> <br><p class="airmail_on">Am 22. November 2016 um 00:54:47, Rick Mann via swift-users (<a href="mailto:swift-users@swift.org">swift-users@swift.org</a>) schrieb:</p> <blockquote type="cite" class="clean_bq"><span><div><div></div><div><br>> On Nov 21, 2016, at 15:09 , Marco S Hyman <marc@snafu.org> wrote:<br>> <br>>> Except it does, because if I write<br>>> <br>>> let a = 2<br>> <br>>> a is of type Int (at least, according to Xcode's code completion).<br>> <br>> and if you write<br>> <br>> let b = 2 + 0.5<br>> <br>> 2 is treated as a double. The type of the literal “2” varies with context. Do you also find that inconsistent and confusing? <br><br>Nope. I can see how the promotion works. Also, Xcode would tell me b is a Double.<br><br>> <br>>> But this gives inconsistent results:<br>>> <br>>> let t = true<br>>> <br>>> let a = Int(true)<br>>> let b = Int(t) // Error<br>>> <br>>> I find this to be very inconsistent and confusing.<br>> <br>> t is a Bool and there is no automatic conversion from Bool to Int.<br>> <br>> true is not a Bool. It may be treated as a Bool depending upon context. In the line `let t = true` it is treated as a Bool. In `let a = Int(true)` it is treated as an NSNumber (assuming you import foundation).<br><br>That may be what's happening, but it's still confusing and unintuitive. That something is lost in the transitivity of going through a variable, aside from "literalness", is confusing. <br><br>And really, it would be nice if the language provided a fast way of getting an number "1" out of a Bool variable true (and 0 out of false). But that conversation is a bigger can of worms than I care to open right now.<br><br>-- <br>Rick Mann<br>rmann@latencyzero.com<br><br><br>_______________________________________________<br>swift-users mailing list<br>swift-users@swift.org<br>https://lists.swift.org/mailman/listinfo/swift-users<br></div></div></span></blockquote></div><div class="bloop_markdown"><p></p></div></body></html>