code_learner96 · 09.05.2026

How to check if an element is contained in a vector in Rust?

Hi! I'm new to Rust and trying to figure out vectors. I have a `Vec`, and I need to check if a certain number is in it. In other languages (like JavaScript or Python), I would just write `if (array.includes(5))` or `if 5 in list:`, but in Rust I can't find anything similar. Here's my code: ```rust fn main() { let numbers = vec![1, 2, 3, 4, 5]; if numbers.contains(5) { println!("Found it!"); } } ``` But the compiler gives an error: "no method named `contains` found for struct `Vec` in the current scope". I tried looking in the documentation, but there are so many methods that I got confused. Maybe I'm doing something wrong? How do I properly check if an element is in a vector? And do I need to import something? I'd appreciate examples with explanations!

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