Registry

It's functions all the way down

Presentation

This library provides a data structure, a Registry, to control the creation of functions from other functions. You can use this technique to:

• create applications out of software components ("dependency injection")
• fine tune JSON encoders/decoders
• create composable data generators for nested datatypes

The following sections introduce in more details the problem that this library is addressing, the concepts behind the solution and various use-cases which can arise on real projects:

1. what is the problem?
2. the concept of a Registry and the resolution algorithm
3. how does this compare to monad and effects?

Tutorials

1. use a Registry to compose Hedgehog generators
2. use a Registry to create applications and define components

How-tos

1. how to install this library?
2. how to do mocking?
3. how to specialize some values in some contexts?
4. how to make a singleton for a database?
5. how to allocate resources which must be finalized?
6. how to initialize components in an application?

Reference guides

1. main operators and functions
2. implementation notes