Mark Delphi questions

• Concatenate string array in Kotlin from data class
• Why the ids are removed?
• What the failure "Operation is not supported for read-only collection" in Android Studio is about?
• How do I remove undeline of TabRow in Jetpack Compose?
• Undo/Redo, how to handle doOnTextChanged and doBeforeTextChanged in TextField of Jetpack Compose?
• How to achieve partially color changing of drawable?
• Unable to get provider com.google.android.gms.ads.MobileAdsInitProvider: java.lang.IllegalStateException

Mark Delphi answers