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Open-Source
The very first thing you should know about Kotlin is that it is an open-source programming language. But, apart from being open-source, Kotlin also provides a single-click tool using which, developers can convert existing Java code.
Supports Full Java Interoperability
One of the major as well as the best features of Android Kotlin is its deep interoperability with Java. This, in fact, has attracted many Java developers as well as Android app developers to learn Kotlin.
Data Classes
The necessity of a class is always argued by programming language designers/makers. Typically, a data class in Java contains lots of boilerplate code which developers have to skip in order to find out the real use of that class.
Collection Filtering
We all know that when working with an API, we developers need to deal with collections quite often. But by using Kotlin’s collection filtering feature, it’s easier to tell what your resulting list should contain.
Key Features of Kotlin
Efficiency
The Kotlin programming language is not only easy to learn, it is also effective in the way that it codes your application. Developers won’t need to spend a lot of time grasping this language. The syntax is intuitive and lean.
Extension Functions
As the name “extension function” suggests, this allows you to add extra features to your existing component, which makes it easy for you to add simple yet impressive features. This is perfect for calculations as well as for appending strings.
Massive Interoperability
This is an excellent example of Java interoperability. You can run Java codes on Kotlin and vice versa. You just need to add the Java class above to your Kotlin project. The two languages co-exist, which makes developers’ lives easier and more productive.
Reducing Crashes at Runtime
In Kotlin, you can easily identify the NullPointerException while compiling your project. This ensures every variable works as a non-null, thus reducing the number of crashes at run-time. If you want to hold onto a null value, just append a question mark as the end of the variable type
Smart Cast Function
This is the ultimate function from a developer’s perspective. It effectively reduces the application’s speed, thus improving its performance. The smart cast function is known to identify the type of function. It will perform all operations that have been coded for a particular type
Safe and Reliable
As mentioned earlier, one of the strongest Kotlin features is that it is relatively safe. Avoiding errors such as “NullPointException” is easy with Null Safe function. This function even allows you to avoid use for nullable types.