illustration for Write Your First Program with the Rust Language
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Write Your First Program with the Rust Language

  11. 11
    Handle errors in Rust using expect()
    31s

Handle errors in Rust using expect()

Pascal Precht
InstructorPascal Precht
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Published 5 years ago
Updated 4 years ago

This lesson discusses how to improve error handling by configuring custom error messages using the expect() function.

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Instructor: [00:00] A slightly better way to unwrap a result type is to use the expect method as opposed to unwrap. Expect gives us the opportunity to pass a message to the user, such as "This is not a valid number," which is a bit more useful than what unwrap returns.

[00:20] If we now run the program and enter an invalid value, we'll see the error message shows up in this text trace.

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