We now have a fairly good understanding of how to manage projects using Cargo. To drive the concepts in, we will build a command-line application that uses a third-party crate. The whole point of this exercise is to become familiar with the usual workflow of building projects by using third-party crates, so we're going to skip over a lot of details about the code we write here. You are encouraged to check out the documentation of the APIs that are used in the code, though.
We'll use a crate called image from crates.io. This crate provides various image manipulation APIs. Our command-line application will be simple; it will take a path to an image file as its argument, rotate it by 90 degrees, and write ...
