Hands-On Design Patterns and Best Practices with Julia

Using do-syntax

When working with anonymous functions, we may end up having a code block that is in the middle of a function call, making the code more difficult to read. The do-syntax is a great way to address this problem and produce clear, easy-to-read code.

To illustrate the concept, let's build up a new use case for our battle fleet. In particular, we will enhance our spaceships with the ability to launch missiles. We also want to support the requirement that launching a weapon requires that the spaceship is in a healthy state. 

We can define a fire function that takes a launch function and a spaceship. The launch function is executed only when the spaceship is healthy. Why do we want to take a function as an argument? Because we want ...