Leverage Rust's functional operators for handling nullable and optional values. Instead of using unwrap() or explicit if-statements, prefer combinators like ok(), and_then(), map_or_else() and the ? operator with Option types. This leads to more concise, readable, and null-safe code:
Leverage Rust’s functional operators for handling nullable and optional values. Instead of using unwrap() or explicit if-statements, prefer combinators like ok(), and_then(), map_or_else() and the ? operator with Option types. This leads to more concise, readable, and null-safe code:
// Instead of this:
let package_manager = PackageJson::load(&base.repo_root.join_component("package.json"))
.and_then(|package_json| {
Ok(PackageManager::read_or_detect_package_manager(
&package_json,
&base.repo_root,
))
})
.map_or_else(|_| "Not found".to_owned(), |pm| pm.unwrap().to_string());
// Prefer this:
let package_manager = PackageJson::load(&base.repo_root.join_component("package.json"))
.ok()
.and_then(|package_json| {
PackageManager::read_or_detect_package_manager(&package_json, &base.repo_root).ok()
})
.map_or_else(|| "Not found".to_owned(), |pm| pm.to_string());
// Instead of this:
if self.commits.is_empty() {
return None;
}
if let Some(first_commit) = self.commits.first() {
let id = &first_commit.id;
return Some(format!("{id}^"));
}
// Prefer this:
let first_commit = self.commits.first()?;
let id = &first_commit.id;
Some(format!("{id}^"))
Additionally, prefer using Option
Enter the URL of a public GitHub repository