Intro to Bow

This repository is a Swift playground presenting an introduction about Bow (version 0.3.0), a library for Functional Programming in Swift.

How to build and run the project

In order to link the playground with the Bow framework, a workspace needed to be created. To be able to run it, you need to:

• 📥 Clone this project.
• ⚙️ Run pod install to fetch the dependencies.
• 🖥 Open IntroToBow.xcworkspace.
• 🔨 Build it. This will build the dependencies (different pods for the Bow modules that we are using in the introduction).
• ▶️ Run the playground.

Contents

The playground contains 6 pages with an overview of the following concepts:

1. Function composition: it shows the main concepts behind Functional Programming and how to combine smaller functions to solve problems in a pure FP way.
2. Data types: some frequent data types to model absence of values, sum types or handle errors are presented in this section.
3. Effects: IO is the main way to handle effects in a pure FP manner, but integrations with other libraries such as RxSwift and BrightFutures are also possible.
4. Higher Kinded Types and Typeclasses: this section shows how Bow emulates Higher Kinded Types and how they can be used with Typeclasses to write generic programs.
5. Polymorphic programs: everything is put together in a simple example that demonstrates how to write a polymorphic program in Bow.
6. Conclusions: the main advantages and disadvantages of Bow are outlined here, with links for further reading and other examples.