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模块1: exercises/modules/modules1.rs
题目
rust
// modules1.rs
//
// Execute `rustlings hint modules1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
mod sausage_factory {
// Don't let anybody outside of this module see this!
fn get_secret_recipe() -> String {
String::from("Ginger")
}
fn make_sausage() {
get_secret_recipe();
println!("sausage!");
}
}
fn main() {
sausage_factory::make_sausage();
}
题目解析
这道题主要就是模块的可见性,一个模块里的代码默认对其父模块私有的,如果想要让父模块能够访问,需要添加pub
rust
mod sausage_factory {
// Don't let anybody outside of this module see this!
fn get_secret_recipe() -> String {
String::from("Ginger")
}
fn make_sausage() {
pub fn make_sausage() {
get_secret_recipe();
println!("sausage!");
}
}
fn main() {
sausage_factory::make_sausage();
}