Oddbean new post about login | logout Can anyone tell me why #rust #rustlang '.unwrap()' is bad? I understand "because it panics" but that's too superficial an answer. AFAICT, every occurrence is by choice of dev. So either it's a bug by dev, or mistake by user. So does '.unwrap()' get crap only bc ppl don't understand the use cases?
It's better pratice to always handle it with _or...() and in worst case, return an error using a Result<>. It's so easy that there's no legitimate reason no to. Proper errors beat panics.
Using `.unwrap()` is not "bad," per se. It is just frequently misused. Utilizing something like `match` or `if let` provides a more idomatic way of handling both expected and unexpected error-cases without causing your application to come to a grinding halt. One such example includes needing it to exit, but wanting to clean up artifacts. Another is creating and handling abstracted error types. Regardless, a good rule of thumb is only to use `.unwrap()` when you anticipate the desired failure outcome should be a panic.