Publish 106

_drafts/2018-04-05-issue-106.md → _posts/2018-04-05-issue-106.md

@@ -14,7 +14,7 @@ author: gregheo
 
 There’s been plenty of news to make developers experience the full range of emotions: [Xcode 9.3](https://developer.apple.com/news/releases/?id=03292018d) with [Swift 4.1](https://swift.org/blog/swift-4-1-released/) made it out of the gate, the WWDC ticket lottery smiled on some and caused gnashing of teeth in others.
 
-Meanwhile, Swift 4.2 and beyond await us. As a reminder, the final merge into the Swift 4.2 branch before a soak period is [coming up in two weeks, on April 20](https://swift.org/blog/4-2-release-process/).
+Meanwhile, Swift 4.2 and beyond await us. As a reminder, the final merge into the Swift 4.2 branch before the soak period is [coming up in two weeks, on April 20](https://swift.org/blog/4-2-release-process/).
 
 What’s new in the world of Swift? Read on!
 
@@ -43,7 +43,7 @@ In [Episode 52](https://spec.fm/podcasts/swift-unwrapped/129738), JP and Jesse c
 
 Languages & Runtime manager [Ted Kremenek](https://twitter.com/tkremenek) shared photos of some [new office decorations over at Swift HQ](https://twitter.com/tkremenek/status/977268865066450944). 🤖
 
-[Chris Lattner](https://twitter.com/clattner_llvm) announced [Swift for TensorFlow](https://groups.google.com/a/tensorflow.org/forum/#!topic/swift/xtXCEvtDe5Q), bringing first-class compiler and language support for the machine learning framework. Aside from the post, you can also check out [the video announcement](https://www.youtube.com/watch?list=PLQY2H8rRoyvxjVx3zfw4vA4cvlKogyLNN&v=Yze693W4MaU) from Chris and Richard Wei presented at the TensorFlow Dev Summit 2018.
+[Chris Lattner](https://twitter.com/clattner_llvm) announced [Swift for TensorFlow](https://groups.google.com/a/tensorflow.org/forum/#!topic/swift/xtXCEvtDe5Q), bringing first-class compiler and language support for the machine learning framework. Aside from the post, you can also [watch the video announcement](https://www.youtube.com/watch?list=PLQY2H8rRoyvxjVx3zfw4vA4cvlKogyLNN&v=Yze693W4MaU) presented at the TensorFlow Dev Summit 2018 by Chris and Richard Wei.
 
 [try! Swift San Jose](https://www.tryswift.co/events/2018/sanjose/) was announced, with a focus on Swift Evolution and all the other Swift open source projects.
 
@@ -104,10 +104,24 @@ We already have methods `first(where:)` and `index(where:)`, and this proposal w
 
 > This proposal introduces a new `Hasher` type representing the standard library's universal hash function, and it extends the `Hashable` protocol with a new `hash(into:)` requirement that expresses hashing in terms of `Hasher`. [...] Standardizing on a single, high-quality hash function greatly improves the reliability of `Set` and `Dictionary`.
 
+
 [SE-0207](https://github.com/apple/swift-evolution/blob/master/proposals/0207-containsOnly.md): *Add a `containsOnly` algorithm to `Sequence`* by Ben Cohen is [under review](https://forums.swift.org/t/se-0207-add-a-containsonly-algorithm-to-sequence/11686).
 
 > It is common to want to confirm that every element of a sequence equals a value, or matches a certain criteria. Many implementations of this can be found in use on GitHub. This proposal adds such a method to `Sequence`.
 
+Instead of this:
+
+{% highlight swift %}
+// every element is 9
+!nums.contains { $0 != 9 }
+{% endhighlight %}
+
+You'll be able to do this:
+
+{% highlight swift %}
+nums.containsOnly(9)
+{% endhighlight %}
+
 
 [Joe Groff](https://twitter.com/jckarter) [suggested a proposal to add `offset(of:)` to `MemoryLayout`](https://github.com/apple/swift-evolution/pull/818/files?diff=unified).