Why you should use Swift Online Test?

The Swift Online Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects: Basic understanding of Swift programming language and its syntax Knowledge of different data types in Swift and how to use them effectively Understanding of control flow statements Proficiency in defining and working with functions Familiarity with creating and using classes and objects Understanding of optionals Knowledge of error handling techniques Proficiency in working with collections like arrays, dictionaries, and sets Understanding of closures Knowledge of concurrency concepts

Swift Online Test

Q: What topics are covered in the Swift Online Test?

Basics of Swift Data Types Control Flow Functions Classes and Objects Optionals Error Handling Collections Closures Concurrency

About the test:

The Swift Online test uses scenario-based MCQs to evaluate candidates on their knowledge of Swift programming language, including syntax, semantics, and data types. The test also evaluates a candidate's ability to write efficient and optimized Swift code, and their familiarity with iOS development concepts, such as UI design, iOS SDK, and Xcode. The test includes a coding question to evaluate hands-on Swift programming skills.

Covered skills:

Basics of Swift
Control Flow
Classes and Objects
Error Handling
Closures

Data Types
Functions
Optionals
Collections
Concurrency

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9 reasons why

Adaface Swift Test is the most accurate way to shortlist iOS Developers

Reason #1

Tests for on-the-job skills

The Swift Online Test helps recruiters and hiring managers identify qualified candidates from a pool of resumes, and helps in taking objective hiring decisions. It reduces the administrative overhead of interviewing too many candidates and saves time by filtering out unqualified candidates at the first step of the hiring process.

The test screens for the following skills that hiring managers look for in candidates:

Able to understand the basics of Swift programming language
Able to work with different data types in Swift
Able to effectively use control flow structures in Swift
Able to define and work with functions in Swift
Able to create and use classes and objects in Swift
Able to handle optionals and unwrap them correctly in Swift
Able to handle errors and exceptions in Swift
Able to work with collections like arrays and dictionaries in Swift
Able to understand and use closures in Swift
Able to handle concurrency and asynchronous tasks in Swift

Reason #2

No trick questions

Traditional assessment tools use trick questions and puzzles for the screening, which creates a lot of frustration among candidates about having to go through irrelevant screening assessments.

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The main reason we started Adaface is that traditional pre-employment assessment platforms are not a fair way for companies to evaluate candidates. At Adaface, our mission is to help companies find great candidates by assessing on-the-job skills required for a role.

Why we started Adaface

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Reason #3

Non-googleable questions

We have a very high focus on the quality of questions that test for on-the-job skills. Every question is non-googleable and we have a very high bar for the level of subject matter experts we onboard to create these questions. We have crawlers to check if any of the questions are leaked online. If/ when a question gets leaked, we get an alert. We change the question for you & let you know.

How we design questions

These are just a small sample from our library of 10,000+ questions. The actual questions on this Swift Online Test will be non-googleable.

🧐 Question
Medium Data Provider DispatchQueue Closures Asychronous operations.	Solve
Consider the following code snippet: What will be printed after the code execution?
Medium Property Observers OOPs	Solve
Consider the following Swift code snippet: What does the code print after execution? A) 800, -100, 80, 80 B) 800, 800, 80, 72 C) 1000, 800, 100, 72 D) 800, 800, 80, 80 E) 800, 0, 80, 80
Medium Class Destructor OOPs	Solve
What does the following Swift code output?
Easy Defer blocks	Solve
What does the following Swift code output?
Easy Lazy Variables	Solve
What does the following Swift code output?
Easy Registration Queue Logic Queues	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
Medium Visitors Count Strings Logic	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill
	Medium Data Provider DispatchQueue Closures Asychronous operations.	3 mins Swift	Solve
Consider the following code snippet: What will be printed after the code execution?
	Medium Property Observers OOPs	2 mins Swift	Solve
Consider the following Swift code snippet: What does the code print after execution? A) 800, -100, 80, 80 B) 800, 800, 80, 72 C) 1000, 800, 100, 72 D) 800, 800, 80, 80 E) 800, 0, 80, 80
	Medium Class Destructor OOPs	2 mins Swift	Solve
What does the following Swift code output?
	Easy Defer blocks	2 mins Swift	Solve
What does the following Swift code output?
	Easy Lazy Variables	2 mins Swift	Solve
What does the following Swift code output?
	Easy Registration Queue Logic Queues	30 mins Coding	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Medium Visitors Count Strings Logic	30 mins Coding	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

	🧐 Question	🔧 Skill	💪 Difficulty	⌛ Time
	Data Provider DispatchQueue Closures Asychronous operations.	Swift	Medium	3 mins	Solve
Consider the following code snippet: What will be printed after the code execution?
	Property Observers OOPs	Swift	Medium	2 mins	Solve
Consider the following Swift code snippet: What does the code print after execution? A) 800, -100, 80, 80 B) 800, 800, 80, 72 C) 1000, 800, 100, 72 D) 800, 800, 80, 80 E) 800, 0, 80, 80
	Class Destructor OOPs	Swift	Medium	2 mins	Solve
What does the following Swift code output?
	Defer blocks	Swift	Easy	2 mins	Solve
What does the following Swift code output?
	Lazy Variables	Swift	Easy	2 mins	Solve
What does the following Swift code output?
	Registration Queue Logic Queues	Coding	Easy	30 mins	Solve
We want to register students for the next semester. All students have a receipt which shows the amount pending for the previous semester. A positive amount (or zero) represents that the student has paid extra fees, and a negative amount represents that they have pending fees to be paid. The students are in a queue for the registration. We want to arrange the students in a way such that the students who have a positive amount on the receipt get registered first as compared to the students who have a negative amount. We are given a queue in the form of an array containing the pending amount. For example, if the initial queue is [20, 70, -40, 30, -10], then the final queue will be [20, 70, 30, -40, -10]. Note that the sequence of students should not be changed while arranging them unless required to meet the condition. ⚠️⚠️⚠️ Note: - The first line of the input is the length of the array. The second line contains all the elements of the array. - The input is already parsed into an array of "strings" and passed to a function. You will need to convert string to integer/number type inside the function. - You need to "print" the final result (not return it) to pass the test cases. For the example discussed above, the input will be: 5 20 70 -40 30 -10 Your code needs to print the following to the standard output: 20 70 30 -40 -10
	Visitors Count Strings Logic	Coding	Medium	30 mins	Solve
A manager hires a staff member to keep a record of the number of men, women, and children visiting the museum daily. The staff will note W if any women visit, M for men, and C for children. You need to write code that takes the string that represents the visits and prints the count of men, woman and children. The sequencing should be in decreasing order. Example: Input: WWMMWWCCC Expected Output: 4W3C2M Explanation: ‘W’ has the highest count, then ‘C’, then ‘M’. ⚠️⚠️⚠️ Note: - The input is already parsed and passed to a function. - You need to "print" the final result (not return it) to pass the test cases. - If the input is- “MMW”, then the expected output is "2M1W" since there is no ‘C’. - If any of them have the same count, the output should follow this order - M, W, C.

Reason #4

1200+ customers in 75 countries

With Adaface, we were able to optimise our initial screening process by upwards of 75%, freeing up precious time for both hiring managers and our talent acquisition team alike!

Brandon Lee, Head of People, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Swift Online Test in your hiring process is that it is an elimination tool, not a selection tool. In other words: you want to use the test to eliminate the candidates who do poorly on the test, not to select the candidates who come out at the top. While they are super valuable, pre-employment tests do not paint the entire picture of a candidate’s abilities, knowledge, and motivations. Multiple easy questions are more predictive of a candidate's ability than fewer hard questions. Harder questions are often "trick" based questions, which do not provide any meaningful signal about the candidate's skillset.

Science behind Adaface tests

Reason #6

1 click candidate invites

Email invites: You can send candidates an email invite to the Swift Online Test from your dashboard by entering their email address.

Public link: You can create a public link for each test that you can share with candidates.

API or integrations: You can invite candidates directly from your ATS by using our pre-built integrations with popular ATS systems or building a custom integration with your in-house ATS.

Reason #7

Detailed scorecards & benchmarks

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Reason #8

High completion rate

Adaface tests are conversational, low-stress, and take just 25-40 mins to complete.

This is why Adaface has the highest test-completion rate (86%), which is more than 2x better than traditional assessments.

Reason #9

Advanced Proctoring

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About the Swift Assessment Test

Why you should use Pre-employment Swift Online Test?

The Swift Online Test makes use of scenario-based questions to test for on-the-job skills as opposed to theoretical knowledge, ensuring that candidates who do well on this screening test have the relavant skills. The questions are designed to covered following on-the-job aspects:

Basic understanding of Swift programming language and its syntax
Knowledge of different data types in Swift and how to use them effectively
Understanding of control flow statements
Proficiency in defining and working with functions
Familiarity with creating and using classes and objects
Understanding of optionals
Knowledge of error handling techniques
Proficiency in working with collections like arrays, dictionaries, and sets
Understanding of closures
Knowledge of concurrency concepts

Once the test is sent to a candidate, the candidate receives a link in email to take the test. For each candidate, you will receive a detailed report with skills breakdown and benchmarks to shortlist the top candidates from your pool.

What topics are covered in the Swift Online Test?

Basics of Swift
Basics of Swift refers to the fundamental concepts and syntax of the Swift programming language, such as variables, constants, data types, operators, and basic control structures. This skill is measured in the test to assess a candidate's proficiency in the foundational aspects of Swift programming, which serves as a strong basis for building more complex applications.
Data Types
Data Types in Swift define the kind of values that can be stored and manipulated in variables or constants. This skill is measured in the test to evaluate a candidate's understanding of the different data types available in Swift, like integers, floats, strings, and arrays, and their usage in writing efficient and type-safe code.
Control Flow
Control Flow refers to the flow of execution within a program, determined by conditional statements, loops, and branches. This skill is measured in the test to assess a candidate's ability to effectively control the execution of their Swift code based on different conditions, making decisions and repeating actions as required.
Functions
Functions in Swift are self-contained blocks of code that perform a specific task. This skill is measured in the test to evaluate a candidate's knowledge of creating, calling, and using functions in Swift, including parameter passing, return types, and the concept of function overloading, which helps in writing modular and reusable code.
Classes and Objects
Classes and Objects are fundamental concepts in object-oriented programming. This skill is measured in the test to gauge a candidate's understanding of creating and working with classes, objects, properties, and methods in Swift, which enables building complex and organized code structures, facilitating code reuse and easy maintenance.
Optionals
Optionals represent the possibility of absence of a value in Swift. This skill is measured in the test to assess a candidate's grasp on handling optional values, unwrapping them safely, and dealing with nil scenarios, which is crucial for writing robust and bug-free code, ensuring data integrity and handling unexpected situations.
Error Handling
Error Handling in Swift is the mechanism of handling and responding to error conditions that might occur during the execution of a program. This skill is measured in the test to evaluate a candidate's knowledge of using Swift's error handling features, such as try-catch blocks, to gracefully handle errors, propagate them, or recover from them, ensuring fault-tolerant and reliable applications.
Collections
Collections in Swift, like arrays, sets, and dictionaries, enable storing and organizing multiple values into a single entity. This skill is measured in the test to assess a candidate's understanding of working with collections efficiently, including performing common operations like insertion, deletion, iteration, and accessing elements, which are essential skills in almost all non-trivial programming tasks.
Closures
Closures are self-contained blocks of functionality that can be passed around and used within Swift code. This skill is measured in the test to gauge a candidate's knowledge of closures, including their syntax, capturing values from the surrounding context, and their usage in scenarios like asynchronous programming or functional programming paradigms, which is indispensable for writing concise and flexible code.
Concurrency
Concurrency in Swift is the ability of a program to execute multiple tasks simultaneously. This skill is measured in the test to evaluate a candidate's understanding of using Swift's concurrency mechanisms like concurrent queues, dispatch groups, and async/await to write efficient, scalable, and responsive code that can handle concurrent execution and synchronization correctly.
Full list of covered topics
The actual topics of the questions in the final test will depend on your job description and requirements. However, here's a list of topics you can expect the questions for Swift Online Test to be based on.
Basics of Swift
Variables
Constants
Data Types
Type Inference
Control Flow
Conditional Statements
Loops
Switch Statements
Functions
Function Parameters
Return Values
Function Overloading
Classes and Objects
Properties
Methods
Initializers
Inheritance
Polymorphism
Optionals
Optional Unwrapping
Optional Chaining
Error Handling
Do-try-catch
Throwing Functions
Collections
Arrays
Dictionaries
Sets
Closures
Closure Syntax
Capture Lists
Escaping Closures
Concurrency
Dispatch Queues
Async-Await
Threading
Grand Central Dispatch
Error Handling
Dealing with Multiple Errors
Futures and Promises
Generics
Extensions
Protocol-Oriented Programming
Memory Management
Automatic Reference Counting (ARC)
Memory Leaks
Access Control
Modules and Frameworks
Debugging and Testing
Unit Testing
UI Testing
Debugging Techniques

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What roles can I use the Swift Online Test for?

iOS Developer
Mobile App Developer
Swift Programmer
Senior iOS Developer
iOS Swift Developer

How is the Swift Online Test customized for senior candidates?

For intermediate/ experienced candidates, we customize the assessment questions to include advanced topics and increase the difficulty level of the questions. This might include adding questions on topics like

Debugging and troubleshooting code
Understanding of memory management and how to avoid memory leaks
Working with networking, REST APIs, and JSON parsing
Implement user interfaces using UIKit or SwiftUI
Knowledge of Core Data or other persistence frameworks for data storage
Asynchronous programming and multithreading

The coding question for experienced candidates will be of a higher difficulty level to evaluate more hands-on experience.

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The hiring managers felt that through the technical questions that they asked during the panel interviews, they were able to tell which candidates had better scores, and differentiated with those who did not score as well. They are highly satisfied with the quality of candidates shortlisted with the Adaface screening.

85%

reduction in screening time

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Swift Hiring Test FAQs

Can I combine multiple skills into one custom assessment?

Yes, absolutely. Custom assessments are set up based on your job description, and will include questions on all must-have skills you specify. Here's a quick guide on how you can request a custom test.

Do you have any anti-cheating or proctoring features in place?

We have the following anti-cheating features in place:

Non-googleable questions
IP proctoring
Screen proctoring
Web proctoring
Webcam proctoring
Plagiarism detection
Secure browser
Copy paste protection

Read more about the proctoring features.

How do I interpret test scores?

The primary thing to keep in mind is that an assessment is an elimination tool, not a selection tool. A skills assessment is optimized to help you eliminate candidates who are not technically qualified for the role, it is not optimized to help you find the best candidate for the role. So the ideal way to use an assessment is to decide a threshold score (typically 55%, we help you benchmark) and invite all candidates who score above the threshold for the next rounds of interview.

What experience level can I use this test for?

Each Adaface assessment is customized to your job description/ ideal candidate persona (our subject matter experts will pick the right questions for your assessment from our library of 10000+ questions). This assessment can be customized for any experience level.

Does every candidate get the same questions?

Yes, it makes it much easier for you to compare candidates. Options for MCQ questions and the order of questions are randomized. We have anti-cheating/ proctoring features in place. In our enterprise plan, we also have the option to create multiple versions of the same assessment with questions of similar difficulty levels.