I always found Ruby's ||= operator interesting, which says (roughly) assign the right hand side to the left hand side, if the latter is nil (or false). But what about assigning the right hand side to the left hand side, if the former is not nil?
Here's my take on these two, with rather intuitive operators (if you ask me, of course):
If you're using WhatsApp, you probably saw the images have a small parallax effect, in the opposite scrolling direction. This gives the impression that the image is on a deeper level, and the "image container" is a window: if you climb on a chair, it's as if you lowered the window (you scrolled down), and now you can see more of the […]
Recently, I stumbled upon a small problem: we have a product details controller which calls a factory method that creates a view with a few UITextViews that detect a website, a phone, and an address, respectively, but the latter was not working reliably. Said method only needs the product object to be passed in to properly create the view.
I recently added some tests to LTHRadioButton, and I gave mirroring a try, something I always wanted to do. What's mirroring? As Apple puts it, it's a representation of the sub-structure and optional "display style" of any arbitrary subject instance.
Benedikt has a really nice and comprehensive post about it, so I'll just very […]
Working with Core Data is getting easier and easier, but there are a couple of improvements I'd like to talk about, and I'd like to start with the auto-generated, generic NSFetchRequest. It's a step in the right direction, but the problem is that trying to use it without explicitly declaring its type won't work:
I was in need of a radio button recently, and it had to be designed like a Google Material Design radio button. Nothing too fancy, but I wanted to spice it up a little bit, by adding a nice animation. The idea was to:
Say we have a composed string that looks like this:
let date = "22 July, 2017"
let value = "€ 148"
let quantity = 5
let string = "\(quantity) of your items, in value of \(value), have been delivered on \(date)."
// 5 of your items, in value of € 148, have been delivered on 22 July, 2017.
Let's say we have a controller that can fetch some data. What would this imply? A loading spinner, the fetching of the data and the update of the UI. We can create a protocol for this, maybe Fetchable:
I recently had this problem: at the start of the app there's a call to fetch some reference data, on which other calls depend, but it shouldn't hinder the app launch itself, nor anything else that doesn't depend on it. So, after several approaches, I decided to use dispatch_groups.
First, a struct to abstract a dispatch_queue and a dispatch […]