Scala – Implicit

  • date 18th February, 2021 |
  • by Prwatech |
  • 0 Comments

Understanding implicit in Scala

 

In Scala, implicits are a powerful feature that allows the compiler to automatically insert additional code to resolve types, provide conversions, or supply values at compile time. THE Implicit parameters, conversions, and classes are key aspects of implicits in Scala.

  1. Implicit Parameters: By marking function parameters as implicit, Scala allows these parameters to be automatically filled in by the compiler based on the context. This feature is commonly use in dependency injection and type classes.

  2. Implicit Conversions: Scala enables implicit conversions that automatically convert objects from one type to another when required. This feature is useful for enhancing library compatibility and enabling syntactic sugar.

  3. Implicit Classes: Implicit classes allow developers to add new functionality to existing types without modifying the original classes. This feature is often use to enrich DSLs (Domain-Specific Languages) or provide convenience methods.

Implicit Parameters

A Implicit Parameters In ScalaImplicit parameters are similar to regular method parameters, except they could be pass to a method silently without going through the regular parameters list.

Implicit conversions

When the compiler finds an expression of the wrong type for the context, it will look for an implicit Function value of a type that will allow it to type check.

 

Types Class

A type class is a group of types that satisfy a contract typically defined by a trait.

A type class is a type system construct that supports ad hoc polymorphism.

 

 

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