Not long ago I started learning Objective-C with an interest of developing apps. I have just started my first app and I have no clue how to make my app retina. I made the design in photoshop and exported it as a png @ 2,048 x 1,536 but however the size of my storyboard is only 1,024 x 768. I have read somewhere on the internet that you need two story boards but I am not sure how to link everything together. I would really appreciate it if someone could help me.


Question: Is it okay to vacuum a laptop keyboard?
Answer: You can use vacuum cleaner, but make sure your laptop's keyboard doesn't have "pop off" keys that could possibly be sucked up by the vacuum.

A can of compressed air will safely blow dust right out of the little crevices between your keys.

You may want to read this article from LifeHacker.