[naasking]

> TBH, once you have halfway-good libraries for dealing with `char *` strings as-is, dynamic arrays and hashmaps, you are not going to be much slowed-down using C than using a higher-level language.

That can't possibly be true. Not having to even think about object lifecycles and ownership because all memory is GC'd saves a lot of time all by itself, not even getting into debugging issues when you get it wrong.

[lelanthran]

> That can't possibly be true. Not having to even think about object lifecycles and ownership because all memory is GC'd saves a lot of time all by itself, not even getting into debugging issues when you get it wrong.

I think perhaps the context may make it clearer: it was about simplicity.

>>> the simplicity and immediacy of results opened my eyes to how C can feel as productive as higher level languages with robust standard libs.

So, sure, no one is saying that you'll be faster in C, but with such a small cognitive footprint, you can be faster than you'd think.

When programming in C, I don't spend much time thinking about the language, I think about the problem more than the language. I don't think about complex relationships between language features; about what might happen if I use a reference in a lambda. I don't need to remember what the `this` keyword refers to depending on how the function was created. I don't need to puzzle my way out of a painted corner due to colored functions.

It's the simplicity that I was responding to. You go faster than you would expect.

As far as object lifecycles go, there's a small number of idiomatic ways to mitigate the problems. Not foolproof, but with such a simple language, whatever valgrind reports can be quickly fixed.

Regarding ownership: I'm not really aware of how GC languages, by way of being GC, helps there. I'm pretty certain it doesn't. If you pass an object to a method in Java, C#, whatever, and that method starts a new thread with it, you're still going to be boned if the callee starts modifying it at the same time.

Whatever ownership issues you have in C, you'll have in most other GC languages as well.

[naasking]

> So, sure, no one is saying that you'll be faster in C, but with such a small cognitive footprint, you can be faster than you'd think.

I would agree that you can be faster than you'd think on problems that C is reasonably good for. This is a fairly small subset of problems though, where your original comment was phrased like a general statement for any sort of problem / general purpose programming. That's what I take issue with.

If you're going to do any kind of programming that depends on interfacing with the world, UTF, protobufs, even rendering to a screen as with this article, you're going to be pulling in those same sorts of dependencies that you denounce from all of those other languages.

> Whatever ownership issues you have in C, you'll have in most other GC languages as well.

I agree you have similar thread safety issues, the ownership issues I was referring to was for managing lifetimes leading to double-frees or leaks. Yes there are some idioms that almost work, but "almost work" is exactly the point, in GC'd languages they actually do just work.

I understand the appeal behind the economy of C but we just shouldn't pretend it's something that it's not.

[neonsunset]

> If you pass an object to a method in Java, C#, whatever, and that method starts a new thread with it, you're still going to be boned if the callee starts modifying it at the same time.

Which is why the concept of thread-safe types exists. The documentation usually explicitly states if a particular container/service/anything else is safe to call from multiple threads concurrently or not, and the standard library goes to great lengths to either make the types that are expected to be used in multi-threaded scenarios thread-safe or to offer thread-safe alternatives (like ConcurrentDictionary<K, V>).

Worst case, most types are engineered in such a way that should thread-safety be violated, it would either lead to an exception or an invalid state but not to memory safety issues.

[jesse__]

It's definitely true.

Memory allocation takes a very small percentage of my time. I'd guess < 1%. Debugging memory issues used to take me more time, but these days it's basically inconsequential, too.

Having written interpreted languages previously to jumping to C & C++ (>10y programming exp), there's a massive cost to using interpreted and/or GCd languages that comments like this one never seem to acknowledge. Random package bit-rot, high-difficulty memory leaks, high-difficulty AND high consequence manual memory management (to avoid the GC), poor performance tooling, nearly completely opaque performance characteristics, inability to optimize performance past a surface level... etc.

If you're building anything more complex than simple web apps, this shit all adds up to a lot. I've worked at a couple shops that these issues hit like a ton of bricks.

[pjmlp]

The joy of debugging memory corruption issues on production, while helpdesk keeps pinging dev team several times a day.

Yep, I have multiple scars and gray hairs due to them.

[lelanthran]

> Yep, I have multiple scars and gray hairs due to them.

Look on the bright side: at least you have your hair :-)

I swore off C++ because (maybe coincidentally, maybe not) I started losing hair around the time I was a f/time C++ developer.

I'm liking Go and C# (and some Java and Kotlin, sometimes) these days for programs that are not suitable to be written in plain C.

I've tried liking Python/PHP type languages, but getting a type error only when it is encountered in production gives me the heeby-jeebies.

[neonsunset]

What kind of GC-based languages were the source of issues for these use cases? Was C# among them (in any recent time)?

[lelanthran]

I've not used C# in recent years.

While I actually liked the language, it's complexity is increasing with diminishing returns.

There's no point in getting to a complexity level of, for example, C++ for any language - people who want such levels of complexity will be happy to use C++.

[neonsunset]

While it certainly will eventually die C++'s death (can't remove language features, only add), it's luckily far from that predicament today.

I don't think you could reasonably compare the two in amount of tacit knowledge one has to posses to avoid all kinds of footguns and get best results. The rule of thumb today for C# is to go with simplest way to do something and don't ignore IDE/analyzers' suggestions or warnings. A lot of focus has been put on terseness and simplicity.

[jesse__]

The experience I was referring to was JS, Python and Ruby

[naasking]

Literally all of the costs you list apply to C/C++ as well, except you have the additional hazards of having to worry about memory safety and leaks all of the time rather than only once every 5 years. Sorry, I don't find your claims plausible at all. It's just too easy to forget what you actually spend your time on.

Edit: and the most significant evidence for this is in comparing all the CVEs for C/C++ vs. memory safe languages like C#/Java.

> I've worked at a couple shops that these issues hit like a ton of bricks.

What you're missing is that 99% those shops wouldn't have existed at all if they had tried to go the C/C++ route because their products just wouldn't have gotten to a viable state. What your experience shows is that working in memory safe languages is so much easier that even average or mediocre programmers can get a viable product.

[jesse__]

In my experience, GC'd languages leak much more frequently because people figure 'oh, the GC will take care of it for me.'

There are excellent tools for detecting memory leaks/safety issues in C, and you can even write all your own allocators for your own edification / amusement / sanity, but in a GC'd languages, you're pretty much fucked across the board. There's some tooling, but it pales in comparison to the tools available for C.

I would also like to acknowledge the topic of CVEs you brought up. Yes, mistakes in mission critical systems happen. And for those systems, maybe something with better memory safety features is more productive in the long run. The original comment I replied to suggested C can be surprisingly productive with just a few tools, which I stand by supporting.

> What you're missing is that 99% those shops wouldn't have existed at all if they had tried to go the C/C++ route [...] average or mediocre programmers can get a viable product

Hard disagree. The two places I have in mind hired average/mediocre people to do somewhat challenging graphics work. Both had interesting products that may have actually been viable (think matterport, figma) but both failed because the UX sucked .. due to what can only be described as UI jank.

Lastly, it is easy to forget what you spend time on. I ve been tracking all my bugs that took more than 30 minutes for the last 10 years. The vast majority are graphics bugs due to API misuse. Very few are memory safety bugs, especially recently.

EDIT: also, half the costs I listed were related to performance. How the fuck do you justify the statement that those apply to C? What language would you pick to have more control over the assembly the machine is running.. other than assembly I guess..

[naasking]

> In my experience, GC'd languages leak much more frequently because people figure 'oh, the GC will take care of it for me.'

"Frequent memory leaks" has never happened to me in 20 years of programming in GC'd languages.

> There are excellent tools for detecting memory leaks/safety issues in C

A process you don't even need in GC'd languages. I think I've had maybe a couple of non-critical leaks in those 20 years due to finalizer bugs.

> also, half the costs I listed were related to performance. How the fuck do you justify the statement that those apply to C?

The vast majority of performance issues are related to algorithmic choices. With the right choice of algorithms and data structures, any language will likely get within a constant factor of C.

Sometimes that constant factor matters, most often it does not given the added costs of eliminating that constant factor, eg. in dev time and risk of introducing bugs or security vulnerabilities. And even where it does matter, you're almost certainly better off writing the performance critical kernel in C and then calling into it from a higher level language, as is common in machine learning.

[lelanthran]

> Literally all of the costs you list apply to C/C++ as well,

But we aren't talking about C/C++.

At least, we weren't, but your comments make a lot more sense in the context of C++.

> Edit: and the most significant evidence for this is in comparing all the CVEs for C/C++ vs. memory safe languages like C#/Java.

Wasn't the most expensive RCE the world has ever seen written in Java?