fedi.ml | Display

1 year ago • •

Did you know that a lot of things in #Rust directly implement the `Ord` trait?

For example `Option<T>` where T: Ord

So you can do:

assert_eq(max(Some(0), Some(1)), Some(1))

assert_eq(max(Some(0), None), Some(0))

assert_eq(min(Some(0), None), None)

There are a lot of other things that implement `Ord`:
doc.rust-lang.org/std/cmp/trai…

Trait for types that form a total order.

^{doc.rust-lang.org}

#rust #RustLang #RustTips #RustTip

in reply to Jan

in reply to Jan • 1 year ago • •

So is None lesser than anything else?

in reply to modulux

in reply to modulux • 1 year ago • •

Good question! I haven't tried it.

But after your question I tried and yes, `None` is lesser than anything else (which makes sense, IMO):

A browser interface to the Rust compiler to experiment with the language

^{play.rust-lang.org}

in reply to Jan

in reply to Jan • 1 year ago • •

Thanks for the answer! I guess I could have tried it. 😳

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