Chris Lattner on the origins of Swift
Added two footnotes with clarifications from people who were there. In episode 1 of the new Swift Community Podcast, Chris Lattner, Garric Nahapetian, and John Sundell spoke about the origins of Swift and the current state of the Swift community, among other things. This is a transcript (edited for readability) of the parts I found most interesting. You’ll see I mainly quoted Chris Lattner because
Swift 3
I’m a big fan of Swift 3. There’s a bunch of relatively small syntax changes that make the language more consistent. The most important of these is certainly the consistent handling of parameter labels in functions (yay!). Another small change I really like is that the @warn_unused_result behavior is now the default. It’s one of those little things that make it harder to screw up unless you explic
Ranges and Intervals in Swift
Note: This article is based on Swift 2.x. Please check out Ranges in Swift 3 for an overview of what changed in Swift 3. In my previous post on pattern matching, I mentioned that the standard library includes overloads of the pattern matching operator ~= for ranges and intervals. These two data types are related, but have some important differences. I’d like to talk a bit more about them because t
Instance Methods are “Curried” Functions in Swift
Clarified my usage of the term “curried”, which isn’t strictly correct. Updated the code to Swift 4. An instance method in Swift is just a type method that takes the instance as an argument and returns a function which will then be applied to the instance. I recently learned about a Swift feature that blew my mind a little. Instance methods are just (partially) “curried” functions that take the in
iPhone 6 Plus Pixel Peeping
By Ole Begemann More about me and contact info November 20, 2014 Last update: November 24, 2014 As you probably know by now, the iPhone 6 Plus renders things differently than every other iOS device to date. To developers, the device exposes a screen rectangle of 414 × 736 points, which the system renders at 3× scale into a backing store of 1242 × 2208 “logical” pixels.1 Since the iPhone 6 Plus dis
Apple Has (Partly) Lifted the NDA for Beta Releases
With the release of the beta versions of iOS 8 and OS X Yosemite at WWDC 2014 yesterday, Apple has also updated the legal agreements for registered iOS and Mac developers. Among other changes, Apple has added the following sentence to section “10.1 Information Deemed Apple Confidential” of the iOS Developer Program License Agreement: Further, Apple agrees that You will not be bound by the foregoin
How to Obtain Undocumented API Diffs Between iOS Versions
Just in case you were wondering how exactly I compiled the list of undocumented iOS API changes for my last article, let me walk you through it. Clone the iOS Runtime Headers Repository Every time Apple releases a new iOS version, Nicolas Seriot does the excellent job of dumping all existing classes and APIs into his iOS Runtime Headers repository on GitHub. So let’s go ahead and clone the repo lo
UICollectionView
If you are an iOS developer, chances are that at some point in your career you have thought about writing (or you have in fact written) your own custom grid view. Let’s Design a Grid View Let’s imagine we want to write such a class. We might put a great deal of thought into the public API of our grid view, because great API design is both really important and very hard. We might decide on a great
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