Kotlin's "Guard Conditions": The Best Feature You Haven't Enabled Yet 🛡️
How to flatten your logic, eliminate nested if-statements, and write cleaner pattern matching with the newest experimental power-up. While the headline-grabbing updates for Kotlin 2.2 focused on K2 compiler stability and performance, a quietly maturing feature is about to change your daily “quality of life.” If you’ve ever felt that your when blocks were getting bloated with nested if statements or repetitive logic, it’s time to meet Guard Conditions. Introduced as a preview in Kotlin 2.1 and refined in 2.2, this feature finally solves the "Horizontal Nesting" problem. The “Nested Logic” Tax 🕸️ Before this update, handling a specific type plus a specific condition forced us into a horizontal branching pattern. You’d check for a type, then immediately open an if block to check a property of that type. It works, but it breaks the linear flow of your code. The Old Way (Standard Kotlin) // A classic pattern in ViewModels or ...