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In media res? Check out Part 1, Part 2, Part 3, and Part 3.5 for all our posts on Core Graphics. In Core Graphics, a path is a step-by-step description of some kind of shape. It could be a circle, a square, a valentine heart, a word frequency histogram or maybe a happy face. It doesn’t include any information such as pixel color, line width or gradients. Paths are primarily used for drawing – fill
Want the TL;DR version? Here’s a gist of all three examples. Async generators and async iteration have arrived! Err, they’ve reached Stage 3, which means they are likely to ship in a future version of JavaScript. Until then, you can enable Stage 3 proposals in Babel to try them out in your own projects. The web is essentially a decentralized app runtime, so subpar language additions have permanent
This post was adapted from a talk called “String Theory”, which I co-presented with James Edward Gray II at Elixir & Phoenix Conf 2016. My posts on Elixir and Unicode were also part of that talk. IO Lists and Phoenix In my last post, I showed how Elixir’s IO lists enable us to build and write output with minimal work and memory usage. This is nice enough for writing files, but it’s absolutely kill
This post was adapted from a talk called “String Theory”, which I co-presented with James Edward Gray II at Elixir & Phoenix Conf 2016. My posts on Elixir and Unicode were also part of that talk. It’s been said that “the key to making programs fast is to make them do practically nothing.” Imagine you’re going to write some data to a file, or send a web response to a browser. What’s the minimum amo
Elixir and Unicode, Part 2: Working with Unicode Strings This post was adapted from a talk called “String Theory”, which I co-presented with James Edward Gray II at Elixir & Phoenix Conf 2016. In my post on Unicode and UTF-8, I showed you the basis of Elixir’s great Unicode support: every string in Elixir is a series of codepoints, encoded in UTF-8. I explained what Unicode is, and we walked throu
Since its release, Swift has emphasized safety, and optionals are an important part of Swift’s approach. They provide a mechanism for representing nil, and require a definite syntax for working with an instance that may be nil. Optionals come in two forms: Optional ImplicitlyUnwrappedOptional The first is the safe kind: it requires the developer to unwrap the optional in order to access the underl
Building an iOS App in Rust, Part 2: Passing Primitive Data Between Rust and iOS Editor’s note: This is the second post in our series on building an iOS app in Rust. Welcome to Part 2 of our “Building an iOS App in Rust” series! If you haven’t read Part 1 already, please do that. Running the code in this post will require you to have set up a Rust toolchain for iOS. Last time, we built a simple “H
Every once in a while, an Android developer might want to use a ViewPager without the added complexity of also using Fragments. A good example is an image gallery, where the user can swipe between different pictures. On these types of pages, all you really want to display is a view of static content (in this case, an image), so I’m going to walk you through how to utilize the ViewPager with just p
Building an iOS App in Rust, Part 1: Getting Started with Rust Editor’s note: This is the first post in our series on building an iOS app in Rust. The vast majority of apps that get developed for iOS and Android are written in the native languages provided by the platform: Swift or Objective-C on iOS, and Java on Android. I don’t expect that to change any time soon; however, sometimes there’s a ne
Finding New Pastures: Big Nerd Ranch’s Next Chapter News It is with a mix of emotions that we announce the upcoming sunsetting of some key aspects of Big Nerd Ranch and the transition...
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