Kotlin Examples - A Guide to Kotlin Development

Cikfo · Dec 23, 2022, 01:37 AM

Kotlin is a language that is similar to Java. It supports all the Java libraries and frameworks. However, Kotlin has many features that make it easier to use. Kotlin is strongly typed, which means that it knows the types of variables. The variables can be read, mutable or immutable. Additionally, Kotlin supports secondary constructors, which allows you to extend classes with more than one constructor. You can also write extension functions. This is a convenient way to write utility methods without having to change the original extended class.

Kotlin uses identity check operators to identify a variable. This is done automatically by the compiler. In addition, Kotlin uses null check and safe call operators to prevent a program from breaking if a variable is not null. Kotlin also supports the Observable concept. Using Observable properties makes it easier to define a method that can be triggered when a certain event occurs.

Kotlin also has a number of default keywords. These include val, when and fun. When used, a keyword takes the place of a vararg or a valarg. Similarly, when is a replacement for a switch case statement.

When is a conditional statement that carries out different actions depending on the state of the variable. There is no minimum number of arguments required for when statements. Depending on the state, it can be used to control a loop. If there are no more branches in the loop, the conditional statement will be evaluated.

Kotlin's when expressions are similar to other programming languages' switch case statements. However, kotlin's when statement is different in some ways. For instance, kotlin's when expression supports range intervals. Another interesting feature of when is that it can be used to perform a non-conditional expression.

In Kotlin, you can use "when" in both expressions and non-expressions. When is a special feature that is only available in Kotlin. With this feature, you can use an expression like if (b!.length) b.length and get the length of b if b is not null. Using this technique, you can easily avoid prolix logic. Moreover, when is not only a useful conditional statement, but it also helps you achieve the same functionality as multiple choices.

When is also useful in writing expressions. When an object is created, it usually has an empty body. Whenever a function is called, the body is filled with information that reflects the content of the object. When is also useful in calling functions that don't need outer classes. Similarly, Kotlin provides four visibility keywords for top-level declarations.

Kotlin provides a lot of support to its community. The Kotlin team offers direct support, while also providing a wide array of community libraries. In addition, you can learn a lot about the language by experimenting with some examples.

Kotlin also has an integrated development environment. When you are using an existing Java file, you can simply paste it in Kotlin to convert it to Java code. By doing this, you will be able to experience the advantages of using a Java program without losing your native experience.

Kotlin Examples - A Guide to Kotlin Development

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