option_result.rs

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option_result.rs

error_handling.rs

pattern_match.rs

iterator_chain.rs

lifetime_generic.rs

trait_impl.rs

closure_move.rs

async_await.rs

macro_rules.rs

ref_deref.rs

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option_result.rs

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fn get_user(id: u32) -> Option<User> {↵

users.iter()↵

.find(|u| u.id == id)↵

.cloned()↵

}

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関連する練習問題

error_handling.rs pattern_match.rs iterator_chain.rs lifetime_generic.rs trait_impl.rs closure_move.rs