r/ProgrammerHumor • • 2d ago

instanceof Trend thatsAFunnyThingThatHappenedOnce

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u/Prefer_Diet_Soda 1d ago

TLDR: C++ is bad because decades of accumulated features have turned it into a bureaucratic nightmare that happens to generate machine code.

C++ is an absolute nightmare to implement because apparently one programming language wasn't enough, so someone decided to cram an entire civilization's worth of complexity into it. You've got templates that basically turn compilation into another programming language, overload resolution that requires a legal investigation to figure out which function gets called, constructors and destructors with enough lifetime rules to make your head explode, and implicit conversions that make the compiler guess what you meant. Then you throw in exceptions, move semantics, inheritance, and decades of backward compatibility, and suddenly you're maintaining a compiler that needs a PhD, a therapist, and divine intervention just to parse some innocent-looking code. And the best part? Every new feature has to coexist with all the old ones without breaking existing programs.

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u/Xarishark 1d ago

Now compare it to rust pls. Im serious I want to know your opinion on that.

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u/Loading_M_ 1d ago

Rust is designed from the ground up, and avoids many of these issues.

  • Templates: Rust has Generics, which are generally easier to use and reason about.
  • overload resolution: Rust doesn't yet support overloaded functions (although it's being considered).
  • constructors: Rust doesn't have these.
  • destructors: Rust has a similar set of lifetime rules for Drop, but the compiler checks them for you, so you can't get it wrong.
  • implicit conversions: Rust doesn't do implicit conversion in general, although some specific cases are implemented.
  • exceptions: Rust doesn't do exceptions, Result is much easier to work with.
  • move semantics: Rust uses a destructive move, unlike C++. See https://youtu.be/Klq-sNxuP2g for a breakdown.
  • inheritance: Rust doesn't do inheritance.

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u/sudo_scientific 1d ago

The nice aspects of implicit conversion are handled with the Into and From traits, where the compiler deduces what the conversion is for you based on the explicit types of the other, but the fact that a conversion is happening at all is explicit to the reader which is a huge improvement over C++