Swift & iOS Online Test
20 questions total, 45 minutes maximum, for mid-level programmers
Programming test includes:
Swift 5 & iOS - 20 Questions
- Swift: Value and Reference Types
- Swift Miscellaneous: Protocols, Optionals, Properties, Key Paths
- Closures, Memory Management
- Grand Central Dispatch (GCD), Concurrency
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Branded PDF Report
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You'll make a great impression!
Reports are provided in PDF format, making them easy to read, share and print.
Sample Swift Test Question
Which statements about the following Swift code are true?
1. The output will be BAR.
2. It's not legal to reuse the name s on line 1.
3. There should be a question mark after s on line 2, since s is an optional string: s?.uppercased().
4. The value of a is undefined after line 3.
5. Not supplying an initial value is a compile error on line 3.
The correct answer is 1.
The key competency is optionals.
The code tests basic optional behaviour – initialization, the guard statement with a conditional binding, scoping rules.
1. Does every candidate have to answer the same questions?
Yes. Swift & iOS test consists of the same questions for every candidate.
In order to properly compare candidates, they need to answer questions of the same difficulty level, and different questions always mean different difficulty levels.
2. How should I interpret the exam scores?
First of all, you need to keep in mind one very important thing:
The purpose of this Swift & iOS online test is not to help you find the best developers.
Its purpose is to help you avoid the worst ones.
For example, you have 5 candidates who get scores of 35, 45, 60, 65, and 80, based on a maximum possible score of 100.
3. Coding Test vs. Quiz
The test is presented in a multiple-choice, or quiz, format, rather than requiring test takers to write code.
4. What skill level is the test for?
5. What about junior and senior level developers?
The test can also be used to test junior programmers, but you should reduce your acceptance score drastically to compensate.
Likewise, you can use it to test senior iOS developers as well, with an increased acceptance score.
Some will argue that it's pointless to judge senior developers based on a test meant for mid-level developers. This is generally true if you're looking for specific skills in a candidate rather than a broad base of expertise.
But at the same time, anyone can claim to be a senior developer on their resume. If you're concerned that candidates might be overstating their knowledge and accomplishments, this Swift & iOS skills test is a good way to determine which ones can actually deliver what they promise.
Made by Professionals
Extremely professional iOS/Objective-C developer, open source contributor