When your code smells it is often not awful code that makes your hold your nose. Rather it’s a simple indication that something may need to be changed. However when you don’t change and ignore you probably will end with a… Continue Reading
Since the introduction of Swift, our behavior towards nil values have greatly changed. Swift brings type safety, and also works hard to prevent sending messages to nil by introducing Optionals. Optionals force you to write guards around your optional code at… Continue Reading
Today I came across code that implemented a complex login process. The login flow was quite complex but what made the code really difficult to understand was how it was implemented. Notifications, delegates, and long case switch statements were used to implement the login flow.… Continue Reading
Swift comes with some implicitly defined variables – that are variables that are accessible in your code even though you’ve not explicitly defined them. These variables are helpful when logging errors or writing test code. __COLUMN__ (Int): The column number in… Continue Reading
Randomness is the lack of pattern or predictability. We can be sure of one thing, however: in the closed, digital universe of CPU cycles there is no true randomness, only pseudo randomness. Pseudorandomness, is often implemented in a way very… Continue Reading
iOS provides several built-in types of transitions. Navigation controllers push and pop to navigate through an information hierarchy, tab bar controllers switch between sections by changing tabs, and any view controller can present and dismiss another view controller modally for… Continue Reading
Many modern languages have exceptions. If you come from Java you’ll most likely using exceptions all the way to handle error cases. For objective-C you are going to have to go back and forget everything you knew about exceptions and… Continue Reading
Some weeks ago I have finished GameBench a simple two player board game framework implemented in the Swift language. It comes with a simple Connect4 App so you can learn how to use it and implement your own board games. SwiftGameBench framework… Continue Reading
When you write testing code you will often want to define a constant. Typical constants that you might want to factor out are your test fixtures. Often Objective-C programmers take the approach of defining the constant like this: #define USER_NAME… Continue Reading
Today I came across the following problem: “If you know the coordinates of the vertices of a polygon with square edges, find the surrounded area. Or more formally given an array of the X and Y coordinates enumerated in a clockwise… Continue Reading