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What is your preferred method to transform a JSON file into a Dictionary type?

Please implement a UI similar to the iOS calendar app. You need to create a custom layout for the collection view, particularly the frameForCellAtIndexPath method. This method is responsible for calculating the frame for each cell in the collection view.

What methods exist to pull off concurrency in iOS?

Rotate the square matrix in a clockwise direction, ensuring not to create an additional matrix.

How does memory managemetn wrok in iOS? Talk about how Automatic Reference Counting (ARC) operates?

How can you obtain the common parent of two UIViews in a view hierarchy? Please provide your solution.

Explain how you would tackle the quality assurance process for a room plan app.

Could you describe the steps you'd take to develop a flight booking app?

Design Etsy's architecture.