DSLs (Domain-Specific Languages) are a powerful feature in Scala that allow you to create custom languages or syntaxes tailored to specific domains or problem spaces. In Scala, there are two main approaches to creating DSLs: internal and external. Internal DSLs use the existing Scala syntax and language constructs to create a new syntax that is … Read more
Reflection is a feature in Scala that allows you to inspect and manipulate objects and classes at runtime. Reflection is useful for implementing advanced features such as serialization, dynamic code loading, and code generation. In Scala, reflection is implemented using the `scala.reflect` package and its sub-packages. The `scala.reflect.api` package defines the API for reflection, while … Read more
Macros are a feature in Scala that allow you to generate code at compile time, rather than at runtime. Macros are useful for generating boilerplate code, optimizing performance, and implementing domain-specific languages. In Scala, macros are defined using the `macro` keyword, and can be used to define both annotation macros and macro methods. Annotation macros … Read more
Self-types are a feature in Scala that allow you to define a type dependency between a trait or class and another type. Self-types can be used to express the requirement that a trait or class must be mixed in with another trait or class, or to provide access to members of another trait or class. … Read more
Type bounds are a feature in Scala that allow you to restrict the types that can be used as type parameters for a generic class or method. Type bounds provide a way to ensure that certain operations can be performed on the type parameter, and to prevent errors that might occur if the wrong type … Read more
Implicit parameters are a feature in Scala that allow you to pass arguments to a function or method implicitly, rather than explicitly. Implicit parameters are useful for providing default values, enabling type classes, and implementing dependency injection. To define an implicit parameter in Scala, you simply mark the parameter as `implicit`. For example, consider the … Read more
Implicit conversions are a feature in Scala that allow you to automatically convert a value of one type to another type when required. Implicit conversions are implemented using implicit functions, which are functions that are automatically applied by the Scala compiler when certain conditions are met. In Scala, implicit conversions are defined using the `implicit` … Read more
Type classes are a powerful feature in Scala that provide a way to add behavior to existing types without modifying their implementations. Type classes are a form of ad hoc polymorphism, which allows different types to be treated uniformly based on their shared behavior. In Scala, type classes are implemented using traits and implicit parameters. … Read more
Parallel programming in Scala involves writing code that can be executed in multiple threads or across multiple machines to improve performance and scalability. Scala provides several abstractions for parallel programming, including parallel collections, actors, futures, and parallelism APIs. Parallel collections were already described in the previous answer, so in this answer, I will focus on … Read more
Parallel collections are a feature in Scala that allow you to process collections in parallel, taking advantage of multi-core processors and improving the performance of certain operations. Parallel collections work by automatically partitioning the collection into smaller pieces and processing them in parallel using multiple threads. In Scala, parallel collections are implemented as a set … Read more