How does the reified keyword in Kotlin work?
I’m trying to understand the purpose of the reified keyword, apparently it’s allowing us to do reflection on generics. However, when I leave … Read more
kotlin
Kotlin and new ActivityTestRule : The @Rule must be public
I’m trying to make UI test for my android app in Kotlin. Since the new system using ActivityTestRule, I can’t make it work: … Read more
Constants in Kotlin — what’s a recommended way to create them?
How is it recommended to create constants in Kotlin? And what’s the naming convention? I’ve not found that in the documentation. companion object … Read more
A failure occurred while executing org.jetbrains.kotlin.gradle.internal.KaptExecution
All of sudden I start getting this error, and I am not getting idea why if anyone just let me know where this … Read more
Default interface methods are only supported starting with Android 7.0 (Nougat)
I upgraded to Android Studio 3.1 and I’m getting the following error: Default interface methods are only supported starting with Android N (–min-api … Read more
Sort collection by multiple fields in Kotlin [duplicate]
This question already has answers here: How to sort based on/compare multiple values in Kotlin? (3 answers) Closed 5 years ago. Let’s say … Read more
How do I initialize Kotlin’s MutableList to empty MutableList?
Seems so simple, but, how do I initialize Kotlin’s MutableList to empty MutableList? I could hack it this way, but I’m sure there … Read more
What is the difference between var and val in Kotlin?
What is the difference between var and val in Kotlin? I have gone through this link: KotlinLang: Properties and Fields As stated on … Read more
How to initialize an array in Kotlin with values?
In Java an array can be initialized such as: int numbers[] = new int[] {10, 20, 30, 40, 50} How does Kotlin’s array … Read more
Smart cast to ‘Type’ is impossible, because ‘variable’ is a mutable property that could have been changed by this time
And the Kotlin newbie asks, “why won’t the following code compile?”: var left: Node? = null fun show() { if (left != null) … Read more