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

CodeInText: 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: "The project resides in a folder named threads_demo in the Chapter08/ directory."

A block of code is set as follows:

fn main() {
    println!("Hello Rust!");
}

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

[dependencies]
serde = "1.0.8"
crossbeam = "0.6.0"
typenum = "1.10.0"

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

$ rustc main.rs
$ cargo build

Bold: Indicates a new term, an important word, or words that you see onscreen. For example, words in menus or dialog boxes appear in the text like this. Here is an example: "Select System info from the Administration panel."