johnhungerford

ZIO-like dependency injection using implicit resolution

Daniel Ciocîrlan recently published a video showcasing a dependency-injection (DI) approach developed by Martin Odersky that uses Scala's implicit resolution to wire dependencies automatically. (See also his reddit post.)

The basic pattern for defining services in Odersky's approach is as follows:

class Service(using Provider[(Dep1, Dep2, Dep3)])

gvolpe

Dependency Injection in Functional Programming

There exist several DI frameworks / libraries in the Scala ecosystem. But the more functional code you write the more you'll realize there's no need to use any of them.

A few of the most claimed benefits are the following:

• Dependency Injection.
• Life cycle management.
• Dependency graph rewriting.