Some languages bring unique benefits to a particular kind of project, making them the best choice. The interoperability of Scala and its functional programming paradigm propelled Scala's rapid growth. In order to address Java's critics, Scala is designed to be concise. The following are some of Scala's unique features that set it apart from other programming languages:
- Type Inference: Scala doesn't require you to mention the data type or return type of functions explicitly. It will infer the type of data by itself and the return type of function depends on the type of last expression present in the function.
- Immutability: The default behavior of Scala variables is immutability, which means that they can't be altered. Thus, concurrency control can be managed easier. In addition, mutable variables can also be used.
- Lazy Evaluation: In lazy evaluation or call-by-need, expressions are not evaluated until their first use, or until their demand. Computations are lazy in Scala by default. To declare a lazy variable, use the lazy keyword.
- Case classes and Pattern matching: Case classes in Scala are immutable classes that can be decomposed via pattern matching. Case classes include public and immutable parameters by default. These classes support pattern matching, which makes it easier to write logical code.
- String Interpolation: Scala 2.10.0 introduces String Interpolation, a new method for generating strings from your data. Users can embed variable references directly in processed string literals with string interpolation. String interpolation in Scala can be achieved using the s, f, and raw interpolation methods.
- Singleton object: Neither static variables nor static methods exist in Scala, so its singleton object (a class with only one object in the source code) is used as an entry point to your program execution. a class. When declaring a singleton object, the keyword "object" is used instead of the class keyword.
- Scala's compatibility and interoperability with Java allow developers to keep their Java libraries and use the JVM.
- By supporting multi-paradigm programming, Scala enables more elegant, compact, and type-safe programming.
- Scala integrates seamlessly with big data ecosystems, which are largely based on Java. It works flawlessly with Java libraries, IDEs (like Eclipse and IntelliJ), and frameworks (such as Spring and Hibernate).