Conventions used

There are a number of text conventions used throughout this book.

Code in text: This indicates code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles. Here is an example: "Cypress performs most of its API tests via the cy.request() method, which serves as a GET command to the web server being tested."

A block of code is set as follows:

enum RedHatBoyState {
    Jumping,
    Running,
    Sliding,
}

When we wish to draw your attention to a particular part of a code block, the relevant lines or items are set in bold:

impl RedHatBoyContext {
        pub fn update(mut self, frame_count: u8) -> 
        Self {
        ...
        self.position.x += self.velocity.x;
        self.position.y += self.velocity.y;
        if self.position.y > FLOOR {
            self.position.y = FLOOR;
        }

Any command-line input or output is written as follows:

the trait `From<SlidingEndState>` is not implemented for `RedHatBoyStateMachine`

Bold: This indicates a new term, an important word, or words that you see onscreen – for instance, words in menus or dialog boxes appear in bold. Here is an example: "Upon any test launch from the GUI, users will have the ability to click on the Add New Test button."

Tips or Important Notes

Appear like this.