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fn main() {
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let s1 = String::from("hello");
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let (s2, len) = calculate_length(s1);
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println!("The length of '{s2}' is {len}.");
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}
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fn calculate_length(s: String) -> (String, usize) {
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let length = s.len(); // len() returns the length of a String
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(s, length)
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}
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