examples/attribute/crate/lib.rs

// This crate is a library
#![crate_type = "lib"]
// The library is named "erty"
#![crate_name = "erty"]

pub fn public_function() {
    println!("called erty's `public_function()`");
}

fn private_function() {
    println!("called erty's `private_function()`");
}

pub fn indirect_access() {
    print!("called erty's `indirect_access()`, that\n> ");

    private_function();
}