This can make the code more self-documenting and easier to read.

By leveraging Kotlin’s built-in null safety features, developers. The developer can be aware of this and use alternatives like top-level functions or extension functions. The syntax to use the Elvis operator is pretty simple and straightforward. Kotlin is a modern, expressive programming language that prioritizes safety and reduces bugs caused by null pointer exceptions. Kotlin string literals can become difficult to read if multiple if cases are used to construct them. This solution could seem like the most human-readable way of conveying the purpose of our code: appending a sentence only if its contents are not null.

For primitive types, there is no such value, so there is no way to mark a property as non-initialized and to provide the diagnostics that lateinit needs to provide. Kotlin tries to provide null-safety even when the variable could be changed from another thread. One of the solutions would be to check the null value with elvis(?:) operator: var result = 'First is $ For (non-nullable) object types, Kotlin uses the null value to mark that a lateinit property has not been initialized and to throw the appropriate exception when the property is accessed. What if the goal is to concatenate only if the second string is not null? There are a few options: if-else Fields, parameters and return values marked NotNull, NonNull, or Nonnull are assumed to have non-null values and are not typically null-checked before use. Println('First is $first and second is $second') Transforming example using run: val companyName = user?.A null String is concatenated as “null” in Kotlin: val first:String? = 'first' You can use the Kotlin extension functions apply() or run() depending on whether you want it to be fluent ( returning this at end) or transforming ( returning a new value at end): The real difference between Java and Kotlin when dealing with null values becomes clear when trying to give fooString a null value, as follows: fooString null In Kotlin, this leads to a compilation error because the fooString variable was declared with a non-nullable type.

If null kotlin