Learning Functional Programming in Go

Directory structure

The directory structure of our application looks like this:

├── downloads├── keys│   └── google-cloud-storage├── pkg│   └── darwin_amd64├── src│   ├── domain│   ├── infrastructure│   ├── interfaces│   ├── usecases│   └── utils└── vendors    ├── pkg    └── src

The source code for our project is main.go, which lives in the project root. The rest of our application is separated into directories corresponding to our application's architectural layers (domain, use cases, interfaces, and infrastructure).

Before looking into the details of the other layers, let's see how we tie them together. That work is done in our main.go file. We start by initializing our configuration options with GetOptions().