Advanced everything in Mobile Dev, page 17
Kotlin Coroutines on Android
Kotlin coroutines let Android code write asynchronous logic that reads like sequential code, suspending instead of blocking a thread. Structured concurrency ties each coroutine to a scope, so a destroyed ViewModel cancels its children automatically.
Kotlin Sealed Classes: Enums for Types
A sealed class is like an enum, but for types. It defines a closed set of subclasses, letting each one carry different data. It's perfect for modeling states like Loading, Success, and Error, ensuring you handle every case at compile time.
Kotlin Scope Functions: Cleaner Code, Clearer Choices
Kotlin's scope functions (let, run, apply) create a temporary workspace for an object, avoiding repetitive variable names. Use them for object configuration or chaining calls.
Kotlin Extension Functions: Add Methods Without Inheritance
Kotlin extension functions let you add new functionality to existing classes without inheritance, as if you were adding a new method. They're perfect for creating helpers for third-party library classes or framework types like String.
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