14 lines
433 B
Text
14 lines
433 B
Text
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use std::collections::VecDeque;
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fn main() {
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let mut stack = VecDeque::new();
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stack.push_back("Element1");
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stack.push_back("Element2");
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stack.push_back("Element3");
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assert_eq!(Some(&"Element1"), stack.front());
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assert_eq!(Some("Element1"), stack.pop_front());
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assert_eq!(Some("Element2"), stack.pop_front());
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assert_eq!(Some("Element3"), stack.pop_front());
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assert_eq!(None, stack.pop_front());
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}
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