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Update variant name (#58)

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Shinya Fujino 2024-05-28 18:04:32 +09:00 committed by GitHub
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book/src/05_ticket_v2/09_error_trait.md
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@ -2,7 +2,7 @@
## Error reporting
In the previous exercise you had to destructure the `InvalidTitle` variant to extract the error message and
In the previous exercise you had to destructure the `TitleError` variant to extract the error message and
pass it to the `panic!` macro.\
This is a (rudimentary) example of **error reporting**: transforming an error type into a representation that can be
shown to a user, a service operator, or a developer.