Practical Error Handling in Rust with Result and the ? Operator

Tue, 01 Sep 2026 00:00:00 +0700

Rust makes recoverable failure part of a function’s type. Instead of relying on exceptions, operations that can fail commonly return Result<T, E>, forcing callers to either handle the error or propagate it.

That explicitness can feel verbose at first. The ? operator and well-designed error types keep the code concise without hiding failure paths.

Result represents success or failure

Result<T, E> has two variants:

$el.innerText = 'Copy', 2000)" class="absolute top-2 right-2 bg-neutral-700 text-white text-xs px-2 py-1 rounded opacity-0 group-hover:opacity-100 transition-opacity" > Copy

Ok(value)
Err(error)

Reading a file therefore returns either the file contents or an I/O error:

Result on Nalar

Practical Error Handling in Rust with Result and the ? Operator

Result represents success or failure