Result

#016 Jun 2022
option result matching

16. Option/Result match?!

Try to avoid matching Option or Result.

Use if let instead.

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let result = Some(111);

// Not nice
match result {
    Some(x) => println!("{x}"),
    None => {}
};

// Better
if let Some(x) = result {
    println!("{x}");
}
#004 Jan 2022
result option

4. Option -> Result

Convert Option to Result easily.

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let o: Option<u32> = Some(200u32);
let r: Result<u32,()> = o.ok_or(());
assert_eq!(r, Ok(200u32));
#003 Jan 2022
result option

3. Result -> Option

Convert Result to Option easily.

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let r: Result<u32,()> = Ok(200u32);
let o: Option<u32> = r.ok();
assert_eq!(o, Some(200u32));