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Flexsin Technologies
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I applied via Approached by Company and was interviewed before Jan 2019. There were 3 interview rounds.
I applied via Company Website and was interviewed in Dec 2019. There were 4 interview rounds.
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I applied via LinkedIn and was interviewed in Jan 2022. There was 1 interview round.
Questions about basic Swift knowledge and past work experience.
Basic Swift concepts such as optionals, closures, and protocols may be asked.
Questions about past projects and how you approached problem-solving may also be asked.
Examples of past work experience and projects may be requested.
Questions about Swift syntax and best practices may be asked as well.
Clean coding principles ensure code readability, maintainability, and scalability.
Use meaningful variable and function names
Keep functions short and focused
Avoid code duplication
Follow SOLID principles
Write unit tests
Refactor regularly
diff is used to compare two collections and return the differences, while guard is used for early exit in a function if a condition is not met.
diff is a method used in Swift to compare two collections and return the differences.
guard is a keyword used in Swift to provide an early exit from a function if a condition is not met.
Example: let array1 = [1, 2, 3, 4], array2 = [3, 4, 5, 6]; let result = array1.diff(array2) //...
GCD stands for Grand Central Dispatch, a technology used in iOS for managing concurrent operations. Multithreading is the ability of a CPU to execute multiple threads concurrently.
GCD is used for managing tasks asynchronously and efficiently utilizing system resources.
Multithreading allows multiple tasks to run concurrently, improving performance and responsiveness of an application.
Example: Using GCD to download image...
I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.
Objective-C is the older language used for iOS development, while Swift is the newer, more modern language.
Objective-C is a superset of C with Smalltalk-style messaging syntax.
Swift is more concise and easier to read than Objective-C.
Swift is safer due to its optionals and type interference features.
Objective-C has been around longer and has a larger codebase, but Swift is becoming more popular.
Many developers prefer S...
I applied via Walk-in and was interviewed before Sep 2023. There were 2 interview rounds.
Serialisation in API is the process of converting data into a format that can be easily transmitted over a network.
Serialisation is used to convert complex data structures into a format that can be easily transmitted over a network.
It involves converting objects or data structures into a stream of bytes that can be sent over a network.
JSON and XML are commonly used formats for serialising data in APIs.
Serialisation is ...
Codable is a protocol in Swift that allows for easy encoding and decoding of data types to and from external representations.
Codable protocol is used to convert custom data types to and from external representations such as JSON, plist, etc.
It requires the types to conform to Encodable and Decodable protocols.
Codable protocol provides default implementations for encoding and decoding.
Example: struct Person: Codable { v...
MVVM is an architectural design pattern that separates the user interface code from the business logic and data model.
MVVM stands for Model-View-ViewModel
Model represents the data and business logic
View displays the UI elements and interacts with the user
ViewModel acts as a mediator between the Model and View, handling user inputs and updating the Model
MVVM helps in achieving separation of concerns and making the code
Classes are reference types, while structs are value types in Swift.
Classes are reference types, meaning they point to the same instance in memory when assigned to a new variable.
Structs are value types, meaning they create a new copy when assigned to a new variable.
Classes support inheritance, while structs do not.
Classes can have deinitializers, while structs cannot.
Example: class Person { var name: String } vs struc
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ARC (Automatic Reference Counting) in Swift is a memory management system used to automatically manage memory allocation and deallocation.
ARC keeps track of how many references there are to an object and automatically deallocates it when there are no more references.
Use strong reference cycles can lead to memory leaks, so use weak or unowned references to break the cycle.
ARC is the default memory management system in S...
MVVM (Model-View-ViewModel) is an architectural design pattern commonly used in iOS development to separate concerns and improve code maintainability.
MVVM separates the user interface (View) from the business logic (ViewModel) and data (Model).
ViewModel acts as an intermediary between the View and the Model, handling user interactions and updating the data.
Swift provides tools like Combine framework for reactive progra...
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