Conventions

In this book, you will find a number of styles of text that distinguish between different kinds of information. Here are some examples of these styles, and an explanation of their meaning.

Code words in text, database table names, folder names, filenames, file extensions, pathnames, dummy URLs, user input, and Twitter handles are shown as follows: "We can use the core.match library in our program so we can use pattern matching."

A block of code is set as follows:

(defn accept-requests!
  [c->m
   requests]
  (go
    (while true
      (let [r (<! c->m)]
        ;;If something comes up
        ;;through the channel
        (swap! requests conj r)))))

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

# lein repl

New terms and important words are shown in bold. Words that you see on the screen, in menus or dialog boxes for example, appear in the text like this: "This step is followed when p is not at the root and p and x are aligned to the left or right, as shown in the next figure."