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Hello everyone, Leo here. Today we'll see a very common problem in computer science, and yes is about asynchronous programming. There's a lot to explore inside the apple's GCD framework but today we'll dive into a class called DispatchGroup and anal...
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Hello my people, Leo here. Today I learned that you have two ways to declare some func on the class/struct level and its using the keywords above. static func foo(){} class func bar(){} But what's the difference? The main difference is static is f...
Hello everyone, Leo here. This week I had to install the Xcode again. But the font was to small by default. So to change the font I had to: CMD + , Go to Font & Colors Make sure to press CMD+A to select all possible text types. Then change the font...
Hello my people, Leo Here. Today I'll show you how to set a dynamic size of a UICollectionViewCell. It's simple but require a little bit of lifecycle understanding. You will manipule the willTransition method inside your UIViewController to achieve ...
Hello everyone, Leo Here. Today I want to share something I discovered recently, and you guessed right is the Phantom Types in swift. The phantom type definition is a technique to create a compile-time guarantee that a given piece of data will always...
Hello people, Leo Here. Today we'll continue the Human interface Guideline Series talking about the first thing you see (or not) on the app, oh yeah we'll talk about the launch screen. The launch screen is a very important topic when you want to caus...
Hello folks, Leo here. Today we'll discuss the most famous communication pattern in Swift/iOS development: the delegation pattern. The delegation pattern is very simple if we try to imagine it is just something delegating to other thing. It's a ONE ...
Hey guys Leo here, Today we'll talk about modality, just some insights for your apps. It's very important you have this feature in your app's flow when you need to change the user focus to a single actionable sub-task of your current flow, examples c...
Hello folks Leo here, Quick tip from what I learned today. The code below make the background from white to yellowish. Obs: self here is the element that you want to have a gradient background let colorTop = UIColor.white.cgColor let ...
Hi guys, Here in my blog i'll try to be as straightforward as possible. So... The answer is: 44x44 AT MINIMUM. You can check for yourself in: Apple's human interface guidelines Extra UI tip: avoid to put controls in your app's screen corners, beca...
