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noxasaxon/doctest.rs

Created October 18, 2021 21:11
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doctest
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doctest.rs
/// ```
/// use ex01::list_of_plastic;
///
/// assert_eq!(list_of_plastic("Polyethylene Terephthalate"), Some("Polyethylene Terephthalate"));
/// assert_eq!(list_of_plastic("not a plastic"), None);
/// assert_eq!(list_of_plastic("Polyvinyl Chloride"), Some("Polyvinyl Chloride"));
/// ```
pub fn list_of_plastic(plastic: &str) -> Option<&str> {
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