Havmor Ice Cream Interview Questions and Answers

I faced challenges with performance optimization while deploying a Flutter application.

• One challenge was optimizing the app's performance on different devices with varying hardware capabilities.

• I used techniques like code splitting to reduce the initial load time of the app.

• I also implemented lazy loading for components that were not immediately needed to improve overall performance.

• Additionally, I utilized tree shaking to eliminate unused code and reduce the app's bundle siz...read more

State management techniques in Flutter help manage the state of widgets and data throughout the app.

• Provider package: A simple way to manage state in Flutter using InheritedWidget.

• Bloc pattern: Helps separate presentation and business logic, making it easier to manage state.

• GetX package: A lightweight state management solution with reactive programming.

• Redux: A predictable state container for Flutter apps, inspired by Redux in web development.

Parallelism involves executing multiple tasks simultaneously, while concurrency involves switching between tasks in a timely manner.

• Parallelism is suitable for tasks that can be truly executed simultaneously, while concurrency is more suitable for tasks that involve waiting for external events or resources.

• Parallelism can lead to better performance in tasks that can be divided into independent subtasks, while concurrency can improve responsiveness and resource utilization.

• Exa...read more

Lambda functions are anonymous functions in Python that can have any number of arguments but only one expression.

• Lambda functions are defined using the lambda keyword.

• They are commonly used for small, one-time operations.

• Example: add = lambda x, y: x + y

Dependency injection is a design pattern where components are given their dependencies rather than creating them.

• In .NET, dependency injection is implemented using built-in IoC containers like Unity, Autofac, or Ninject.

• Dependencies are registered in the container and injected into the classes that need them.

• This helps in decoupling components, making the code more maintainable and testable.

• For example, in ASP.NET Core, services are registered in the Startup class and injecte...read more

Design a student management results system and write logic to sort students with English marks above 80.

• Create a database table for students with fields like name, marks in English, etc.

• Implement a function to retrieve and filter students with English marks above 80.

• Sort the filtered students based on their marks in English.

• Display the sorted list of students in the results system.

Use string methods to find a substring within a given string.

• Use the indexOf() method to find the starting index of the substring within the string.

• Use the substring() method to extract the substring based on the starting index and length.

• Consider using regular expressions for more complex substring matching.