Why you should use Swift & iOS Online Test?

The Test Swift & iOS 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: Sintassi rapida Gestione della memoria in Swift Gestione degli errori in Swift Strutture di dati in Swift Networking in iOS Design dell'interfaccia utente in iOS Framework di dati core Concorrenza in iOS Programmazione rapida Integrazione del codice Swift con Objective-C

Swift & iOS Online Test

About the test:

Il test IOS SWIFT è progettato per valutare la conoscenza del candidato del linguaggio di programmazione rapida e la sua applicazione nello sviluppo di iOS. Il test utilizza MCQs basati su scenari per valutare la competenza del candidato in aree chiave come sintassi, gestione della memoria, protocolli e framework come UIKIT, Fondazione e dati di base. Il test include anche una domanda di codifica per valutare le capacità di programmazione pratica.

Covered skills:

Sintassi rapida
Gestione degli errori in Swift
Networking in iOS
Framework di dati core
Programmazione rapida

Gestione della memoria in Swift
Strutture di dati in Swift
Design dell'interfaccia utente in iOS
Concorrenza in iOS

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9 reasons why

Adaface Swift & iOS Test is the most accurate way to shortlist sviluppatore iOSs

Reason #1

Tests for on-the-job skills

The Swift & iOS 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:

Comprendere e applicare efficacemente la sintassi rapida
Gestire la memoria in rapida efficiente
Gestione delle eccezioni ed errori in rapido accuratamente
Lavorare con varie strutture di dati in Swift
Implementazione di networking nelle applicazioni iOS
Progettazione di interfacce utente in iOS efficacemente
Utilizzo del framework di dati core per la gestione dei dati
Comprensione e implementazione della concorrenza in iOS
Competente nella programmazione rapida

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.

View sample questions

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

Questi sono solo un piccolo campione della nostra biblioteca di oltre 10.000 domande. Le domande reali su questo Test Swift & iOS sarà non googleabile.

🧐 Question
Medium Data Provider DispatchQueue Closures Asychronous operations.	Try practice test
Consider the following code snippet: What will be printed after the code execution?
Medium Property Observers OOPs	Try practice test
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	Try practice test
What does the following Swift code output?
Easy Defer blocks	Try practice test
What does the following Swift code output?
Easy Lazy Variables	Try practice test
What does the following Swift code output?
Medium Completion Handlers Views Animations	Try practice test
Consider the following iOS (Swift) code snippet: What will happen when this view controller appears? A) The squareView will move 100 points to the right instantly and then change its background color to blue. B) The squareView will not move, and its background color will not change. C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second. D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second. E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.
Medium UI Responder Chain UI Views Interaction.	Try practice test
Consider the following iOS (Swift) code snippet: When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default. A) Only "CustomButton touchesBegan" will be printed. B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed. C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed. D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed. E) No output will be printed.
Medium ViewController Buggy Code	Try practice test
Here's two different ways to write the same code in iOS (Swift): Which of the following statements are correct?
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	Try practice test
Consider the following code snippet: What will be printed after the code execution?
	Medium Property Observers OOPs	2 mins Swift	Try practice test
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	Try practice test
What does the following Swift code output?
	Easy Defer blocks	2 mins Swift	Try practice test
What does the following Swift code output?
	Easy Lazy Variables	2 mins Swift	Try practice test
What does the following Swift code output?
	Medium Completion Handlers Views Animations	2 mins iOS	Try practice test
Consider the following iOS (Swift) code snippet: What will happen when this view controller appears? A) The squareView will move 100 points to the right instantly and then change its background color to blue. B) The squareView will not move, and its background color will not change. C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second. D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second. E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.
	Medium UI Responder Chain UI Views Interaction.	3 mins iOS	Try practice test
Consider the following iOS (Swift) code snippet: When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default. A) Only "CustomButton touchesBegan" will be printed. B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed. C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed. D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed. E) No output will be printed.
	Medium ViewController Buggy Code	3 mins iOS	Try practice test
Here's two different ways to write the same code in iOS (Swift): Which of the following statements are correct?
	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	Try practice test
Consider the following code snippet: What will be printed after the code execution?
	Property Observers OOPs	Swift	Medium	2 mins	Try practice test
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	Try practice test
What does the following Swift code output?
	Defer blocks	Swift	Easy	2 mins	Try practice test
What does the following Swift code output?
	Lazy Variables	Swift	Easy	2 mins	Try practice test
What does the following Swift code output?
	Completion Handlers Views Animations	iOS	Medium	2 mins	Try practice test
Consider the following iOS (Swift) code snippet: What will happen when this view controller appears? A) The squareView will move 100 points to the right instantly and then change its background color to blue. B) The squareView will not move, and its background color will not change. C) The squareView will change its background color to blue instantly and then move 100 points to the right over 1 second. D) The squareView will move 100 points to the right and change its background color to blue simultaneously over 1 second. E) The squareView will move 100 points to the right over 1 second, and the background color will change to blue after 1 second.
	UI Responder Chain UI Views Interaction.	iOS	Medium	3 mins	Try practice test
Consider the following iOS (Swift) code snippet: When the user taps on the CustomButton, what will be the output? Note that UIButton is a subclass of UIControl by default. A) Only "CustomButton touchesBegan" will be printed. B) "CustomButton touchesBegan" and "CustomView touchesBegan" will be printed. C) "CustomButton touchesBegan", "CustomView touchesBegan", and "ViewController touchesBegan" will be printed. D) "CustomButton touchesBegan" and "ViewController touchesBegan" will be printed. E) No output will be printed.
	ViewController Buggy Code	iOS	Medium	3 mins	Try practice test
Here's two different ways to write the same code in iOS (Swift): Which of the following statements are correct?
	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

Con Adaface siamo stati in grado di ottimizzare il nostro processo di screening iniziale fino al 75%, liberando tempo prezioso sia per i responsabili delle assunzioni che per il nostro team di acquisizione dei talenti!

Brandon Lee, Capo del Popolo, Love, Bonito

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Reason #5

Designed for elimination, not selection

The most important thing while implementing the pre-employment Test Swift & iOS 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 Test Swift & iOS 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

Learn more

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About the Swift & iOS Assessment Test

Why you should use Pre-employment Swift & iOS Online Test?

The Test Swift & iOS 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:

Sintassi rapida
Gestione della memoria in Swift
Gestione degli errori in Swift
Strutture di dati in Swift
Networking in iOS
Design dell'interfaccia utente in iOS
Framework di dati core
Concorrenza in iOS
Programmazione rapida
Integrazione del codice Swift con Objective-C

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 & iOS Online Test?

Sintassi SWIFT
La sintassi SWIFT si riferisce alle regole e alla struttura del linguaggio di programmazione rapido. Comprende i vari componenti come variabili, funzioni, flusso di controllo e concetti orientati agli oggetti che consentono agli sviluppatori di scrivere codice efficiente e leggibile. SWIFT implica la gestione dell'allocazione e dell'allocazione delle risorse di memoria per garantire un utilizzo efficiente della memoria e prevenire perdite di memoria nelle applicazioni. Include concetti come il conteggio di riferimento, la gestione automatica della memoria con ARC (conteggio automatico di riferimento) e riferimenti forti, deboli e non chiusi. Consente agli sviluppatori di gestire, propagare e recuperare da errori con grazia. Implica l'uso di meccanismi come i blocchi di do-catch, il lancio e la cattura di errori e la gestione di diversi tipi di errori, come errori di runtime e errori specifici del dominio.
Strutture di dati in Swift
Le strutture di dati in SWIFT rappresentano l'organizzazione e l'archiviazione dei dati in memoria. Forniscono modi efficienti per archiviare, accedere e manipolare i dati. Le strutture di dati comuni includono array, dizionari, stack, code ed elenchi collegati.
Networking in iOS
Networking in iOS comporta l'integrazione della connettività di rete e della comunicazione nelle applicazioni iOS. Include concetti come la creazione di richieste HTTP/HTTPS, la gestione dei dati di risposta, l'implementazione di API RESTful e l'utilizzo di librerie come URLSession o Alamofire per le operazioni di rete. La progettazione dell'interfaccia in iOS si concentra sulla creazione di interfacce visivamente accattivanti, intuitive e intuitive per applicazioni iOS. Implica l'utilizzo del framework UIKIT, la progettazione di layout con vincoli e il layout automatico, l'implementazione di interazioni utente e l'incorporazione dei principi di progettazione per fornire un'esperienza utente senza soluzione di continuità. Framework in iOS fornisce un approccio orientato agli oggetti alla gestione del livello del modello di un'applicazione. Consente agli sviluppatori di archiviare, recuperare e manipolare i dati come oggetti, gestendo al contempo relazioni di dati complesse e fornendo funzionalità come la persistenza dei dati, il versioning e il monitoraggio del cambiamento automatico. La concorrenza in iOS prevede l'esecuzione simultanea di più compiti o operazioni per migliorare le prestazioni e la reattività delle applicazioni. Include concetti come Multithreading, Grand Central Dispatch (GCD), code di operazione e tecniche di sincronizzazione per gestire l'esecuzione concorrente ed evitare le condizioni di razza.
Swift Programming
La programmazione Swift comprende il complesso complessivo Conoscenza e competenza nel linguaggio rapido, che copre la sintassi, le caratteristiche linguistiche, le migliori pratiche e le tecniche di sviluppo. Include la comprensione di concetti come opzioni, chiusure, generici, protocolli e funzionalità di linguaggio avanzate che consentono agli sviluppatori di scrivere un codice rapido efficiente e gestibile.
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 Test Swift & iOS to be based on.
Variabili
Costanti
Opzioni
Flusso di controllo
Funzioni
Chiusure
Classi
Strutture
Enums
Allocazione della memoria
Conteggio di riferimento automatico (ARC)
Perdite di memoria
Gestione degli errori
La gestione delle eccezioni
Array
Dizionari
Imposta
Elenchi collegati
Pile
Code
Alberi binari
Grafici
Richieste HTTP
API RESTful
Analisi JSON
Urlsession
Alamofire
Layout automatico
Storyboard
Xib
Viste da tavolo
Viste di raccolta
Nozioni di base sui dati core
Relazione di entità
Recuperando i dati
Aggiornamento dei dati
Eliminazione dei dati
Multithreading
Grand Central Dispatch (GCD)
Code di operazione
Gruppi di spedizione
Problemi di concorrenza
Delegati
Protocolli
Estensioni
Generici
Eredità
Polimorfismo
Set di opzioni
Sovraccarico dell'operatore
Controllo di accesso
Tipo di casting
TUPLE
Manipolazione delle stringhe
Tipi di errore
Programmazione asincrona
Concetti di networking
Test unitari
Debug
Integrazione continua
Test automatizzati
Documentazione del codice
Swift Package Manager

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What roles can I use the Swift & iOS Online Test for?

sviluppatore iOS
Sviluppatore di app mobili
Swift Developer
ingegnere iOS

How is the Swift & iOS 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

Test unitari in Swift
Ottimizzazione delle prestazioni in Swift
Multithreading in iOS
Debug e risoluzione dei problemi in iOS
Processo di invio dell'App Store
Rilevamento e prevenzione delle perdite di memoria in Swift
Notifiche locali e remote in iOS
Meccanismi di memorizzazione nella cache in iOS
Controllo della versione del codice utilizzando GIT
Internazionalizzazione e localizzazione in iOS

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

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I responsabili delle assunzioni hanno ritenuto che, attraverso le domande tecniche poste durante le interviste del panel, erano in grado di individuare quali candidati avevano ottenuto i punteggi migliori e di differenziarli da quelli che non avevano ottenuto altrettanto punteggio. Sono altamente soddisfatto con la qualità dei candidati selezionati con lo screening Adaface.

85%

Riduzione del tempo di screening

Visualizza il caso di studio completo

Swift & iOS Hiring Test Domande frequenti

Posso combinare più competenze in una valutazione personalizzata?

Si assolutamente. Le valutazioni personalizzate sono impostate in base alla descrizione del tuo lavoro e includeranno domande su tutte le competenze indispensabili che specificate.

Hai in atto delle caratteristiche anti-cheat o procuratore?

Abbiamo in atto le seguenti caratteristiche anti-cheat:

Domande non googiche
Proctoring IP
procuratore web
Proctor di webcam
Rilevamento del plagio
Sicuro browser

Leggi di più sulle caratteristiche di procuratore.

Come interpreto i punteggi dei test?

La cosa principale da tenere a mente è che una valutazione è uno strumento di eliminazione, non uno strumento di selezione. Una valutazione delle competenze è ottimizzata per aiutarti a eliminare i candidati che non sono tecnicamente qualificati per il ruolo, non è ottimizzato per aiutarti a trovare il miglior candidato per il ruolo. Quindi il modo ideale per utilizzare una valutazione è decidere un punteggio di soglia (in genere il 55%, ti aiutiamo a benchmark) e invitiamo tutti i candidati che segnano al di sopra della soglia per i prossimi round di intervista.

Per quale livello di esperienza posso usare questo test?

Ogni valutazione di Adaface è personalizzata per la descrizione del tuo lavoro/ personaggio del candidato ideale (i nostri esperti in materia sceglieranno le domande giuste per la tua valutazione dalla nostra biblioteca di oltre 10000 domande). Questa valutazione può essere personalizzata per qualsiasi livello di esperienza.

Ogni candidato riceve le stesse domande?

Sì, ti rende molto più facile confrontare i candidati. Le opzioni per le domande MCQ e l'ordine delle domande sono randomizzate. Abbiamo anti-cheatri/procuratore in atto. Nel nostro piano aziendale, abbiamo anche la possibilità di creare più versioni della stessa valutazione con questioni di difficoltà simili.