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In Defense of C++

(dayvster.com)
185 points todsacerdoti | 1 comments | | HN request time: 0s | source
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loeg ◴[] No.45268662[source]
> in C++, you can write perfectly fine code without ever needing to worry about the more complex features of the language. You can write simple, readable, and maintainable code in C++ without ever needing to use templates, operator overloading, or any of the other more advanced features of the language.

This... doesn't really hold water. You have to learn about what the insane move semantics are (and the syntax for move ctors/operators) to do fairly basic things with the language. Overloaded operators like operator*() and operator<<() are widely used in the standard library so you're forced to understand what craziness they're doing under the hood. Basic standard library datatypes like std::vector use templates, so you're debugging template instantiation issues whether you write your own templated code or not.

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butterisgood ◴[] No.45268759[source]
Overloaded operators were a terrible mistake in every programming language I've encountered them in. (Yes, sorry Haskell, you too!)

I don't think move semantics are really that bad personally, and some languages move by default (isn't that Rust's whole thing?).

What I don't like is the implicit ambiguous nature of "What does this line of code mean out of context" in C++. Good luck!

I have hope for C++front/Cpp2. https://github.com/hsutter/cppfront

(oh and I think you can write a whole book on the different ways to initialize variables in C++).

The result is you might be able to use C++ to write something new, and stick to a style that's readable... to you! But it might not make everyone else who "knows C++" instantly able to work on your code.

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wvenable ◴[] No.45269102[source]
Overloaded operators are great. But overloaded operators that do something entirely different than their intended purpose is bad. So a + operator that does an add in your custom numeric data type is good. But using << for output is bad.
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LexiMax ◴[] No.45270621[source]
I will die on the hill that string concatenation should have its own operator, and overloading + for the operation is a mistake.

Languages that get it right: SQL, Lua, ML, Perl, PHP, Visual Basic.

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112233 ◴[] No.45272324[source]
Tangential, but Lua is the most write-only language I have had pleasure working with. The implementation and language design are 12 out of 10, top class. But once you need to read someone else's code, and they use overloads liberally to implement MCP and OODB and stuff, all in one codebase, and you have no idea if "." will index table, launch Voyager, or dump core, because everything is dispatched at runtime, it's panic followed by ennui.
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1. butterisgood ◴[] No.45279960{3}[source]
Perl was one for me that I always had a little trouble reading again later.

I guess forth as well... hmmm