fundamentals

name	fundamentals
description	Master Kotlin syntax, OOP principles, SOLID practices, functional programming, and data structures.
version	2.0.0
sasmp_version	1.3.0
bonded_agent	01-android-fundamentals
bond_type	PRIMARY_BOND
atomic	true
single_responsibility	Kotlin & OOP fundamentals
parameters	{"topic":{"type":"string","enum":["kotlin","oop","solid","functional","collections"],"required":false},"code_context":{"type":"string","required":false}}
retry	{"max_attempts":2,"backoff":"exponential","on_failure":"return_basic_example"}
logging	{"level":"info","include":["query","response_time","errors"]}

Kotlin Fundamentals Skill

Quick Start

// Variables
val immutable = "constant"
var mutable = "variable"

// Functions
fun greet(name: String): String = "Hello, $name"

// Classes
data class User(val id: Int, val name: String)

// Null safety
val user: User? = null
user?.name // safe call
user?.name ?: "Unknown" // elvis operator

Key Concepts

Null Safety

• ? for nullable types
• !! for non-null assertion (avoid)
• ?: elvis operator for defaults
• ?.let { } for null-safe blocks

Extension Functions

fun String.isValidEmail(): Boolean = contains("@")
val valid = "[e-mail]".isValidEmail()

Scope Functions

• apply: Configure object
• let: Transform
• run: Execute with context
• with: Receiver operations
• also: Side effects

Coroutines

viewModelScope.launch {
      = withContext(Dispatchers.IO) {
        fetchData()
    }
}