I love pizza… or pasta… or it just crashes… Some time ago I have attended an iOS meetup in Poznań, on which the attendants were given a short quiz during a break. We had to answer what would be printed in the console after code execution. One of the code snippets looked similarly to this one: I have answered that…
Monthly archives of “February 2016”
#6 Basic LLDB tips
Long story short For a few years of programming iOS apps, my use of LLDB debugger has been minimal: That was all of it. Nothing to be proud of. Hitting a breakpoint and using a po command. I have known that po stands for ‘print object’ and that it can evaluate expressions. The more complex problems I had to deal…
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#5 When compiler doesn’t know when a String is of String type
String initialised with a class Did you know that Swift 2.1 introduced new syntax for initialisation that works more or less like NSStringFromClass([Object class]) in Objective-C? From now on, you can initialise String in the following way: I dug the documentation and I found out that there is no initialiser that takes a class as an init argument. Because of…
#4 Migration from Parse to Heroku
In this tutorial I will show how to migrate our iOS Parse application to Heroku step by step: In the first step we will migrate Parse DB to Self-Hosted MongoDB then we will set up Local Parse Server and finally we’ll deploy Parse Server to Heroku During creating this post I mainly based on Parse Server Guide, where you can…
#3 Infix operator
Have you ever had a chance to see code similar to the one below? and you haven’t really known what all these words mean? Perfect☺ Let’s decode all keywords and make some simple examples to explain everything! But before we do that … Above code is used to define new custom operators in Swift. These operators can have no existing…