What does the Rust question mark operator do?
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The question mark operator in Rust offers a convenient way to handle errors or missing data.
When used with Result, the question mark operator will either:
unwrap an Ok
or return an Err
When it’s used with Option, it will either:
unwrap a Some
or return a None
Because the question mark operator potentially returns values, the function signature must have either Result or Option set as the return type.