If we were to create a Rust version of this page for Haskell, what cool programming techniques would you add to it?

  • Buttons
    link
    fedilink
    English
    arrow-up
    1
    ·
    3 hours ago

    What if I specify the wrong type? let retrieved = storage.get::<SomeOtherType>();?

    Is it a runtime error or a compile time error?

      • Ephera@lemmy.ml
        link
        fedilink
        arrow-up
        1
        ·
        edit-2
        3 hours ago

        Well, you would determine the TypeId of SomeOtherType, then search for that as the key in your HashMap and get back a None, because no entry exists and then you’d hand that back to the user.
        I guess, my little usage example should’ve included handling of an Option value…

        So, it’s only a runtime error, if you decide to .unwrap() or similar.