There are times when you’ll want your app to run different code depending on which environment it’s in: development, production, etc.
For example: You provide your templating engine with a
baseurl variable. In production, you want it to point to
https://my-app.com, but in development you want it to point to
We can accomplish this in Rust-y web apps with environment variables and the dotenv crate, as demonstrated in the following post.