37 lines
965 B
Rust
37 lines
965 B
Rust
// options2.rs
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// Execute `rustlings hint options2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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#[cfg(test)]
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mod tests {
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use super::*;
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#[test]
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fn simple_option() {
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let target = "rustlings";
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let optional_target = Some(target);
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// TODO: Make this an if let statement whose value is "Some" type
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word = optional_target {
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assert_eq!(word, target);
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}
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}
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#[test]
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fn layered_option() {
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let mut range = 10;
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let mut optional_integers: Vec<Option<i8>> = Vec::new();
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for i in 0..(range + 1) {
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optional_integers.push(Some(i));
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}
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// TODO: make this a while let statement - remember that vector.pop also adds another layer of Option<T>
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// You can stack `Option<T>`'s into while let and if let
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integer = optional_integers.pop() {
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assert_eq!(integer, range);
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range -= 1;
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}
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}
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}
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