Kotlin

Kotlin (Basic)

These concepts cover the fundamental syntax and basic features of Kotlin. They are necessary for writing simple Kotlin programs and understanding the core structure and flow of Kotlin applications.

1. Introduction to Kotlin

   • Setting up the development environment (IDE, SDK).

   • Understanding Kotlin’s purpose and use cases.

   • Reason: Fundamental setup and understanding are necessary to start coding in Kotlin.

   • Example Task: Set up a Kotlin project in IntelliJ IDEA and write a simple "Hello, World!" program.

2. Basic Syntax and Structure

   • Variables and data types.

   • Basic operators and expressions.

   • Reason: Basic syntax and data handling are essential to writing any Kotlin program.

   • Example Task: Declare different types of variables and perform basic arithmetic operations.

3. Control Flow Statements

   • Conditional statements (if, when).

   • Loops (for, while, do-while).

   • Reason: Control flow is crucial for directing the execution flow of programs.

   • Example Task: Write a program that uses a when statement to display different messages based on user input.

4. Functions

   • Defining and calling functions.

   • Function parameters and return types.

   • Reason: Functions encapsulate functionality and are a key part of code organization and reuse.

   • Example Task: Create a function that calculates the factorial of a number and call it from the main function.

5. Null Safety

   • Nullable types and the Elvis operator (?:).

   • Safe calls (?.) and the not-null assertion operator (!!).

   • Reason: Null safety is a key feature of Kotlin that helps prevent null pointer exceptions.

   • Example Task: Write a program that demonstrates the use of nullable types and safe calls.

6. Collections and Arrays

   • Creating and using arrays, lists, sets, and maps.

   • Basic operations on collections (adding, removing, iterating).

   • Reason: Collections are basic data structures for storing and manipulating groups of data.

   • Example Task: Create a list of strings, add and remove items, and iterate through the list to print each item.