دانلود کتاب دوره فشرده کاتلین ۲.۰ – ساخت، تست و ایمن‌سازی برنامه‌های اندروید و وب شامل الگوهای تابعی، مدیریت JSON و نقاط پایانی RESTful

We’ll start by taking a look at why Kotlin 2.0 has become so important in modern development. First, we will start with its roots at JetBrains, then see how it made its way into Android, and finally, how big companies like Pinterest and Uber used it to great success. Then, we will see how features like null-safety, coroutines, and concise syntax really shine in the real world. We then get our Linux workstation ready for Kotlin development, starting with installing the OpenJDK `17, set up SDKMAN to handle the Kotlin `2.0.20 compiler, and then making sure our environment can reliably compile and run Kotlin code. Once you’ve set up the environment, we will need to configure IntelliJ IDEA Community Edition as our main development hub. We will be integrating essential plugins like Gradle Kotlin DSL support for building scripts, EditorConfig for consistent styling, Detekt and Ktlint for static analysis and formatting, and optional tools like Arrow Meta and Swagger/OpenAPI for advanced metaprogramming and API documentation. For each plugin installation, we’ll walk we through the process step-by-step, and we will get to confirm that everything’s working by importing and running the TaskTracker starter project. After all the necessary tools in place, we will dive into Kotlin 2.0’s modern syntax enhancements. We will apply context-receivers to get rid of repetitive parameters, define value classes to model domain types without runtime cost, and refactor our REPL loop to use sealed interfaces and exhaustive when-expressions. We will use contracts to improve flow analysis and adopt new standard library extensions for collection transformations. Throughout, we will be refactoring the Task Tracker code base as it happens, and we will see how each improvement makes the code cleaner, safer, and easier to maintain.