When it comes to dynamic templating of apps sometimes it’s helpful to determine at runtime if two colos have enough constrast so that one can be the background color and the other the foreground color. The W3C defines in it’s Web Content Accessibility Guidelines (WCAG) 2.0 a formula to find this ratio. Let’s take a look on how to implement this calculation using a Swift UIColor extension.
Swift Array contains a lot of quality of life functions that help the developer code operations on Array elements. One thing that the Swift Standard Library falls short is in it’s ability to remove duplicates from an Array.
By leveraging Swift Extensions we can create a function that enhances the Swift Array built-in functionality to remove duplicates, provided their element conforms to the Equatable protocol.
While working on a past project, a requirement was to set the background colour of a button with a specified colour retrieved
from a REST API endpoint. This colour was a HEX string value in the format #FF0000.
Unfortunately, UIKit has no UIColor constructor that receives a colour in the Hex format, so I needed to implement a way to achieve this.
It’s long overdue. The reason I have lasted so long in Facebook is the fact that a lot of my contacts I find only there. But since all of them have mobile phones and email I realized that’s just convenience, and so, it ends.
Recently I came across a third party backend writen in C# that encrypted small pieces of sensible data for storing in the database with AES-256-CBC. The piece of code responsible for the encryption and decryption can be found at the bitlush blog (kudos to the authors). This backend would send this encrypted information to our backend system writen in PHP, and it was our responsability to decrypt those pieces of data on our end, and so we had to effectively at least write the decrypt function exactly the same way as the C#’s counterpart. We went on to write a PHP class that is a 1:1 port.
Ever wonder how Google can give the world amazing and above all free software? How can one, who apparently gives everything for free make, last year alone, a 16 Billion dollar net income? Well, Google sells advertisement, and they are damn good at it. Why? Because they know more about you than you probably know about yourself.
