Skip Navigation

InitialsDiceBearhttps://github.com/dicebear/dicebearhttps://creativecommons.org/publicdomain/zero/1.0/„Initials” (https://github.com/dicebear/dicebear) by „DiceBear”, licensed under „CC0 1.0” (https://creativecommons.org/publicdomain/zero/1.0/)OG
Posts
0
Comments
23
Joined
2 yr. ago

  • That's silly. Luckily, I don't think this was the same situation. This was at a university and they had classes with other languages. The beginner classes were split into two variants, where some students (mostly CS students) learned C, and other students (economy, etc.) learned Python. I suppose they figured it was more useful to them or something.

  • I was a teacher's assistant in beginner's programming at university for a bit. I expected them to learn C, which I knew enough of, but I got assigned to a group that learned Python instead. I had never used Python at the time. I ended up having to speed learn it while trying to teach it, to not be completely useless.

  • It may be possible to use the Any trait to "launder" the value by first casting it to &Any and then downcasting it to the generic type.

     
        
    let any_value = match tmp_value {
        serde_json::Value::Number(x) => x as &Any,
        // ...
    };
    
    let maybe_value = any_value.downcast_ref::< T >();
    
      

    I haven't tested it, so I may have missed something.

    Edit: to be clear, this will not actually let you return multiple types, but let the caller decide which type to expect. I assumed this was your goal.

  • I considered the smaller one at first, but decided to take the larger one and use the compression straps to keep it tight when packing a smaller volume. It doesn't feel as bulky as I thought it would at first.

  • Also the Swedish classic "glida in på en räkmacka" ((to) slide in on a shrimp sandwich), which basically means to end up somewhere (location, career, situation) without any difficulties. The shrimp sandwich symbolizes a life without difficulties or in some luxury.

    Then there's also "halka in på ett bananskal" ((to) slip in on a banana peel), which is similar to the above, but not always favorable and you don't have any plan or preparation. You just winged it or it just happened by accident.

  • Static types aside, the file system has a lot of failure cases, which every language is affected by, and Rust makes them very visible. This can indeed feel like a lot, but it's an intentional feature and makes more sense in larger projects. I guess the feeling may get amplified by the author's style of long form posts with a lot of details.

    Error handling in practice contains a lot of "let the caller deal with it", using the ? operator to pass errors up the call stack. The more verbose options are for when you need to actually handle it.