Update errors1.rs
Add Result type signature as it is difficult for new comers to understand Generics and Error all at once
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@ -63,7 +63,7 @@ mod tests {
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// `Option`.
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// `Option`.
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// To make this change, you'll need to:
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// To make this change, you'll need to:
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// - update the return type in the function signature to be a Result that
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// - update the return type in the function signature to be a Result<String, String> that
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// could be the variants `Ok(String)` and `Err(String)`
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// could be the variants `Ok(String)` and `Err(String)`
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// - change the body of the function to return `Ok(stuff)` where it currently
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// - change the body of the function to return `Ok(stuff)` where it currently
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// returns `Some(stuff)`
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// returns `Some(stuff)`
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