Can you give some examples of where singletons might be a good idea?

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The iOS interview differs from other interviews for software engineering roles, when it comes to specifics around implementation and frameworks.

An iOS interview will typically consist of a combination of the following interviews:

Practical
Computer Science Fundamentals
Higher Level
Framework Specific
Behavioral

1. Can you give some examples of where singletons might be a good idea?

Most developers have at least used Core Graphics for drawing basic shapes, but you might also have used it for text and resizing images. You should aim for at least a little experience, because this is one of the most important Apple frameworks.
Start with self, which refers to the current object your code is running inside, then move on to Self, which refers to the current type your code is running inside. You can remember this by looking at the capital letter: we name our types using a capital first letter, so Self refers to a type.
Property observers let you run code before or after a property is modified. Try to give a practical example here: “if you have a score property that holds an integer, you might attach a didSet observer so that it updates a label whenever the score changes.”
Apple uses them extensively – thinks like UIApplication, for example, are designed to exist only once. Finally, try to give a fresh example of your own, such as creating an app-wide logger

Can you give some examples of where singletons might be a good idea?

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Can you give some examples of where singletons might be a good idea?

❤ If you liked Fatskills, consider supporting us by checking out The Life Manuals You Never Got.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know? Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson© 2026 Fatskills.com

All trademarks, logos and brand names are the property of their respective owners. All company, product and service names used in this website are for identification purposes only. Use of these names, trademarks and brands does not imply endorsement.

About | Explore | User Guide | Topics | Subjects | Doubt Solver | Career Aptitude Test | Answers | Free Tools | What Should We Know?
Privacy | Terms |

Without work one finishes nothing. - Ralph Waldo Emerson
© 2026 Fatskills.com