Use Kotlin null-safety instead of `!!`: ```kotlin val name = user?.name ?: "Unknown" ``` - `?.` safely accesses nullable values. - `?:` (Elvis) supplies a fallback or can throw: ```kotlin val name = user?.name ?: error("User name is required") ``` - Use `requireNotNull(value)` when null indicates invalid input: ```kotlin val name = requireNotNull(user.name) { "User name is required" } ``` Prefer nullable types, safe calls, and Elvis expressions; avoid `!!` in production.
Scanned 9/5/2026
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Use Kotlin null-safety instead of `!!`:
```kotlin
val name = user?.name ?: "Unknown"
```
- `?.` safely accesses nullable values.
- `?:` (Elvis) supplies a fallback or can throw:
```kotlin
val name = user?.name ?: error("User name is required")
```
- Use `requireNotNull(value)` when null indicates invalid input:
```kotlin
val name = requireNotNull(user.name) { "User name is required" }
```
Prefer nullable types, safe calls, and Elvis expressions; avoid `!!` in production.
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