Conventions used

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

Code in text: 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: “This means that we must alter the existing schema for the to-do item table and add a user schema to the src/schema.rs file.”

A block of code is set as follows:

table! {
    to_do (id) {
        id -> Int4,
        title -> Varchar,
        status -> Varchar,
        date -> Timestamp,
        user_id -> Int4,
    }
}
table! {
    users (id) {
        id -> Int4,
        username -> Varchar,
        email -> Varchar,
        password -> Varchar,
        unique_id -> Varchar,
    }
}

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

[default]
exten => s,1,Dial(Zap/1|30)
exten => s,2,Voicemail(u100)
exten => s,102,Voicemail(b100)
exten => i,1,Voicemail(s0)

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

docker-compose up

Bold: 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: “If we press the Send button in Postman another two times before the initial 30 seconds is up, we get the following printout:”

Tips or important notes

Appear like this.