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$ operator. great idea! i believe the only contender is julia (with "end" but that is a SUUPER awkward keyword since end also closes functions) > Structs and

$ operator. great idea! i believe the only contender is julia (with "end" but that is a SUUPER awkward keyword since end also closes functions) > Structs and classes can even overload this operator nope. fuck, now it's a terrible idea

bachmeier 1y ago
I don't see why it would be a terrible idea. It's pretty convenient if you're slicing a multidimensional array.
- throwawaymaths 1y ago
  except are you sure that's what it's doing? it could have been overloaded. you have to ask yourself that every time.
  - Doxin 1y ago
    Or you can assume it's implemented sanely. Yes if someone overrides $ and does something wildly wrong with it that'll get confusing. That's the fault of whoever wrote that code though, not of $ itself. You can also overload +, imagine the mayhem if someone did something weird with that. should we ban overloading operators altogether?
    - throwawaymaths 1y ago
      > Or you can assume it's implemented sanely excuse me, have you spent any time in tech? people fucking love to do clever shit that gets people in trouble. using NULL as a not-pointer value signalling absence (without safeguards) is probably the most notorious -- but at least useful, but if you want to get brain meltingly annoying and pervasive, we dont have to stray too far from the idea of operator overloading; c++'s << operator can just go to hell.
      - Doxin 1y ago
        I work in tech full time. I mostly write python code. Python similar to D allows you to override ~all operators. I have yet to run into an instance where someone has overridden operators to do something completely insane. Honestly the weirdest real use-case I've ran into is pathlib overriding division on path objects to instead mean concatenation. Which seems confusing until you realize it just means paths get written like `build_dir = root_dir / "build"` which is sensible enough. Weirdest not-real use case is of course the famous goto-in-python module which overrides attribute access in combination with unhinged dark magic to implement goto.
  - 1980phipsi 1y ago
    I've looked at a lot of D code, and I can't recall it ever being misused.
sedatk 1y ago
> i believe the only contender is julia C# has "^n" notation that means "length - n". For example: Take the last element of an array or any other structure that supports indices: var a = ar[^1]; Take the last three elements of an array or any other data structure that supports ranges: var lastThree = ar[^3..];
WhereIsTheTruth 1y ago
I'll take this: Vec2 result = translation + (rotationMatrix * (scalingMatrix * point)); Over this: const result = vec2Add(translation, mat2MulVec2(rotationMatrix, mat2MulVec2(scalingMatrix, point))); Anytime And that's a very simple example, in Zig, that kind of equations doesn't scale well, when it comes to readability
- ioasuncvinvaer 1y ago
  A problem that I always run into with code using * for multiplication of matrices is which operation they use. Is it element wise or a matrix multiplication?

bachmeier 1y ago

I don't see why it would be a terrible idea. It's pretty convenient if you're slicing a multidimensional array.

throwawaymaths 1y ago
except are you sure that's what it's doing? it could have been overloaded. you have to ask yourself that every time.
- Doxin 1y ago
  Or you can assume it's implemented sanely. Yes if someone overrides $ and does something wildly wrong with it that'll get confusing. That's the fault of whoever wrote that code though, not of $ itself. You can also overload +, imagine the mayhem if someone did something weird with that. should we ban overloading operators altogether?
  - throwawaymaths 1y ago
    > Or you can assume it's implemented sanely excuse me, have you spent any time in tech? people fucking love to do clever shit that gets people in trouble. using NULL as a not-pointer value signalling absence (without safeguards) is probably the most notorious -- but at least useful, but if you want to get brain meltingly annoying and pervasive, we dont have to stray too far from the idea of operator overloading; c++'s << operator can just go to hell.
    - Doxin 1y ago
      I work in tech full time. I mostly write python code. Python similar to D allows you to override ~all operators. I have yet to run into an instance where someone has overridden operators to do something completely insane. Honestly the weirdest real use-case I've ran into is pathlib overriding division on path objects to instead mean concatenation. Which seems confusing until you realize it just means paths get written like `build_dir = root_dir / "build"` which is sensible enough. Weirdest not-real use case is of course the famous goto-in-python module which overrides attribute access in combination with unhinged dark magic to implement goto.
- 1980phipsi 1y ago
  I've looked at a lot of D code, and I can't recall it ever being misused.

sedatk 1y ago

> i believe the only contender is julia C# has "^n" notation that means "length - n". For example: Take the last element of an array or any other structure that supports indices: var a = ar[^1]; Take the last three elements of an array or any other data structure that supports ranges: var lastThree = ar[^3..];

WhereIsTheTruth 1y ago

I'll take this: Vec2 result = translation + (rotationMatrix * (scalingMatrix * point)); Over this: const result = vec2Add(translation, mat2MulVec2(rotationMatrix, mat2MulVec2(scalingMatrix, point))); Anytime And that's a very simple example, in Zig, that kind of equations doesn't scale well, when it comes to readability

ioasuncvinvaer 1y ago
A problem that I always run into with code using * for multiplication of matrices is which operation they use. Is it element wise or a matrix multiplication?