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Infosys
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I applied via Approached by Company and was interviewed in Jun 2024. There were 2 interview rounds.
I applied via LinkedIn and was interviewed in Mar 2024. There was 1 interview round.
MVVM focuses on separation of concerns by introducing a ViewModel layer, while MVC combines the responsibilities of the Model and Controller.
MVC stands for Model-View-Controller, where the Model represents the data, the View displays the data, and the Controller handles user input and updates the Model.
MVVM stands for Model-View-ViewModel, where the ViewModel acts as an intermediary between the View and the Model, hand...
I applied via Company Website and was interviewed in Nov 2022. There were 2 interview rounds.
Classes are reference types while structs are value types.
Classes are passed by reference while structs are passed by value.
Classes support inheritance while structs do not.
Classes have a default initializer while structs do not.
Classes can be deinitialized while structs cannot.
Examples of classes include UIView and UIViewController while examples of structs include CGRect and CGPoint.
Infosys interview questions for designations
I applied via Naukri.com and was interviewed before Oct 2023. There was 1 interview round.
Local data is managed using Core Data framework in iOS development.
Use Core Data framework to create, read, update, and delete local data.
Utilize entities, attributes, and relationships to model the data.
Implement fetch requests to retrieve data based on specific criteria.
Use NSManagedObject subclasses to represent data objects.
Utilize NSPersistentContainer to manage the Core Data stack.
Dynamic UI like Amazon can be created using a combination of responsive design, data-driven content, and user personalization.
Utilize responsive design principles to ensure the UI adapts to different screen sizes and devices.
Implement data-driven content to display relevant information based on user preferences and behavior.
Use user personalization techniques such as recommendations, personalized product suggestions, a...
Struct is value type while Class is reference type in Swift. Structs are passed by value while Classes are passed by reference.
Structs are ideal for small data types like coordinates, colors, etc.
Classes are ideal for larger data types like view controllers, network managers, etc.
Structs are immutable by default while Classes are mutable.
Structs cannot inherit from other types while Classes can.
Structs are stack alloca
I applied via Company Website and was interviewed in Jul 2020. There was 1 interview round.
What people are saying about Infosys
Classes and structures are both used to define custom data types, but they have some key differences.
Classes are reference types, while structures are value types.
Classes support inheritance, while structures do not.
Classes have deinitializers, while structures do not.
Classes have reference counting for memory management, while structures do not.
Classes can have optional property types, while structures cannot.
Retain cycle is a memory management issue where objects reference each other and cannot be released. It can be avoided by using weak or unowned references.
Retain cycle occurs when two or more objects hold strong references to each other.
To avoid retain cycle, use weak or unowned references instead of strong references.
Weak references do not increase the reference count of an object and automatically become nil when the...
Opinion binding is a legal doctrine that requires judges to follow the decisions of higher courts in similar cases.
Opinion binding is also known as stare decisis.
It helps to ensure consistency and predictability in the legal system.
For example, if a higher court has already ruled that a certain law is unconstitutional, lower courts must follow that ruling in similar cases.
Opinion binding can be controversial, as it can...
GCD and Operation Queues are both used for concurrent programming in iOS, but differ in their approach.
GCD is a C-based API that uses a thread pool model for concurrency.
Operation Queues are built on top of GCD and provide a higher-level abstraction for concurrency.
GCD is best for simple, lightweight tasks, while Operation Queues are better for more complex tasks with dependencies.
GCD uses blocks for task execution, wh...
The life cycle of iOS applications refers to the stages an app goes through from launch to termination.
The app is launched by the user or system
The app enters the foreground and becomes active
The app can be sent to the background or suspended
The app can be terminated by the user or system
The app can be resumed from the background or suspended state
The app can receive memory warnings and handle them appropriately
The UIViewController life cycle consists of several stages that occur when the view controller is loaded and unloaded.
viewDidLoad() - called when the view controller's view is loaded into memory
viewWillAppear() - called just before the view appears on the screen
viewDidAppear() - called just after the view appears on the screen
viewWillDisappear() - called just before the view disappears from the screen
viewDidDisappear()...
I applied via Recruitment Consulltant and was interviewed before Feb 2021. There was 1 interview round.
Optional is a type in Swift that can hold a value or be nil. Struct and class are both used to define custom data types.
Optional is denoted by a question mark (?) and is used to handle nil values.
Structs are value types and are passed by value, while classes are reference types and are passed by reference.
Structs have a default memberwise initializer, while classes do not.
Classes can inherit from other classes, while s...
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...
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