Stage 10.5: Referencing Other Modules And Crates
Items in modules can be referenced with their full module path std::f64::consts::PI.
A simpler way is the use keyword. It allows us to specify particular items from
modules we want to use throughout our code without a full path. For instance use
std::f64::consts::PI allows me to just use the identifier PI in my main
function.
std is the crate of the standard library of Rust which is full of useful data
structures and functions for interacting with your operating system.
A searchable directory of crates created by the community can be found at https://crates.io.
Further information: