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@ -100,15 +100,12 @@ enum CreationError {
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impl fmt::Display for CreationError {
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impl fmt::Display for CreationError {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
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f.write_str((self as &dyn error::Error).description())
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let description = match *self {
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CreationError::Negative => "Number is negative",
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CreationError::Zero => "Number is zero",
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};
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f.write_str(description)
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}
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}
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}
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}
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impl error::Error for CreationError {
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impl error::Error for CreationError {}
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fn description(&self) -> &str {
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match *self {
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CreationError::Negative => "Negative",
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CreationError::Zero => "Zero",
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}
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}
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}
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