count_words(text: &str) -> usize [11-13]
sum := vec2_add(a, b);
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Трехстороннюю встречу по Украине отложили20:29
Appending ? to a Result or ?T expression unwraps the success case and propagates the failure case. If the value is ok(v) or some(v), it evaluates to v. If the value is err(e) or none, the current function returns immediately with that error or none.
Export symbols with pub — everything else is package-private
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