The `?` Operator Hides 4 Lines of Code

Added: 2026-05-19

[00:00:00]Did you know that the question mark operator hides four lines of code in Rust?

[00:00:05]Error handling used to look like this.

[00:00:08]But, this is the modern version of error handling. Just a question mark operator.

[00:00:14]This is what the question mark operator expands to. These four lines are hidden by that one character. Notice the into for error conversion. The happy path stays flat. You can chain as many fail-able steps as you need. Errors propagate up automatically. Please follow for [music] more systems programming content without the guardrails.