average c++ dev
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But does it have cargo-mommy
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I actually do like that C/C++ let you do this stuff.
Sometimes it's nice to acknowledge that I'm writing software for a computer and it's all just bytes. Sometimes I don't really want to wrestle with the ivory tower of abstract type theory mixed with vague compiler errors, I just want to allocate a block of memory and apply a minimal set rules on top.
wrote on last edited by [email protected]100%. In my opinion, the whole "build your program around your model of the world" mantra has caused more harm than good. Lots of "best practices" seem to be accepted without any quantitative measurement to prove it's actually better. I want to think it's just the growing pains of a young field.
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You shouldn't have any warnings. They can be totally benign, but when you get used to seeing warnings, you will not see the one that does matter.
I know, that's why it bothered me that it seemed to be "policy" to just ignore them.
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Ignoring warnings is really not a good way to deal with it. If a compiler is bitching about something there is a reason to.
A lot of times the devs are too overworked or a little underloaded in the supply of fucks to give, so they ignore them.
In some really high quality codebases, they turn on "treat warnings as errors" to ensure better code.
I know that should be the philosophy, but is it? In my experience it seems to be normal to ignore warnings.
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Depends on the age of the codebase, the age of the compiler and the culture of the team.
I’ve arrived into a team with 1000+ warnings, no const correctness (code had been ported from a C codebase) and nothing but C style casts. Within 6 months, we had it all cleaned up but my least favourite memory from that time was “I’ll just make this const correct; ah, right, and then this; and now I have to do this” etc etc. A right pain.
So, did you get it down to 0 warnings and manage to keep it there? Or did it eventually start creeping up again?
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"C++ compilers also warn you..."
Ok, quick question here for people who work in C++ with other people (not personal projects). How many warnings does the code produce when it's compiled?
I've written a little bit of C++ decades ago, and since then I've worked alongside devs who worked on C++ projects. I've never seen a codebase that didn't produce hundreds if not thousands of lines of warnings when compiling.
None. We treat warnings as compiler errors with a compiler flag
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"C++ compilers also warn you..."
Ok, quick question here for people who work in C++ with other people (not personal projects). How many warnings does the code produce when it's compiled?
I've written a little bit of C++ decades ago, and since then I've worked alongside devs who worked on C++ projects. I've never seen a codebase that didn't produce hundreds if not thousands of lines of warnings when compiling.
I mostly see warnings when compiling source code of other projects. If you get a warning as a dev, it's your responsibility to deal with it. But also your risk, if you don't. I made it a habit to fix every warning in my own projects. For prototyping I might ignore them temporarily. Some types of warnings are unavoidable sometimes.
If you want to make yourself not ignore warnings, you can compile with
-Werrorif using GCC/G++ to make the compiler a pedantic asshole that doesn't compile until you fix every fucking warning. Not advisable for drafting code, but definitely if you want to ship it. -
I used to love C++ until I learned Rust. Now I think it is obnoxious, because even if you write modern C++, without raw pointers, casting and the like, you will be constantly questioning whether you do stuff right. The spec is just way too complicated at this point and it can only get worse, unless they choose to break backwards compatibility and throw out the pre C++11 bullshit
I suppose it's a matter of experience and practise. The more you wotk with it the better you get. As usual with all things one can learn.
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Not only that, but everyone who sees that code later is going to waste so much time trying to understand it. That includes future you.
That what comments and documentation are for.
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No there is not. Borrow checking and RAII existed in C++ too and there is no formal axiomatic proof of their safety in a general sense. Only to a very clearly defined degree.
In fact, someone found memory bugs in Rust, again, because it is NOT soundly memory safe.
Dart is soundly Null-safe. Meaning it can never mathematically compile null unsafe code unless you explicitly say you're OK with it. Kotlin is simply Null safe, meaning it can run into bullshit null conditions.
The same thing with Rust: don't let it lull you into a sense of security that doesn't exist.
Borrow checking...existed in C++ too
Wat? That's absolutely not true; even today lifetime-tracking in C++ tools is still basically a research topic.
...someone found memory bugs in Rust, again, because it is NOT soundly memory safe.
It's not clear what you're talking about here. In general, there are two ways that a language promising soundness can be unsound: a bug in the compiler, or a problem in the language definition itself permitting unsound code. (
unsafechanges the prerequisites for unsoundness, placing more burden on the user to ensure that certain invariants are upheld; if the code upholds these invariants, but there's still unsoundness, then that falls into the "bug in Rust" category, but unsoundness of incorrectunsafecode is not a bug in Rust.)Rust has had both types of bugs. Compiler bugs can be (and are) fixed without breaking (correct) user code. Bugs in the language definition are, fortunately, fixable at edition boundaries (or in rare cases by making a small breaking change, as when the behavior of
extern "C"changed). -
But I must o p t i m i z e! ó_ò
Yes, let's spend two hours on figuring out optimal values of preallocating a vector for your specific use-case. It's worth the couple of microseconds saved! Kleinvieh macht auch Mist.
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You don't need
unsafeto write vulnerable code in rust.Yes I know there are other ways to do it. That's one way.
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"C++ compilers also warn you..."
Ok, quick question here for people who work in C++ with other people (not personal projects). How many warnings does the code produce when it's compiled?
I've written a little bit of C++ decades ago, and since then I've worked alongside devs who worked on C++ projects. I've never seen a codebase that didn't produce hundreds if not thousands of lines of warnings when compiling.
I work on one of the larger c++ projects out there (20 to 50 million lines range) and though I don't see the full build logs I've yet to see a component that has a warning.
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Borrow checking...existed in C++ too
Wat? That's absolutely not true; even today lifetime-tracking in C++ tools is still basically a research topic.
...someone found memory bugs in Rust, again, because it is NOT soundly memory safe.
It's not clear what you're talking about here. In general, there are two ways that a language promising soundness can be unsound: a bug in the compiler, or a problem in the language definition itself permitting unsound code. (
unsafechanges the prerequisites for unsoundness, placing more burden on the user to ensure that certain invariants are upheld; if the code upholds these invariants, but there's still unsoundness, then that falls into the "bug in Rust" category, but unsoundness of incorrectunsafecode is not a bug in Rust.)Rust has had both types of bugs. Compiler bugs can be (and are) fixed without breaking (correct) user code. Bugs in the language definition are, fortunately, fixable at edition boundaries (or in rare cases by making a small breaking change, as when the behavior of
extern "C"changed).wrote on last edited by [email protected]Have you heard about cve-rs?
https://github.com/Speykious/cve-rs
Blazingly fast memory failures with no unsafe blocks in pure Rust.
Edit: also I wish whoever designed the syntax for rust to burn in hell for eternity
Edit 2: Before the Cult of Rust
sends their assassins to take out my family, I am not hating on Rust (except the syntax) and I'm not a C absolutist, I am just telling you to be aware of the limitations of your tools -
But does it have cargo-mommy
wrote on last edited by [email protected]https://github.com/Shadlock0133/cargo-vibe
I thought it was a joke, but this is actually viable and even configurable
By default,
cargo-vibewill, on success, vibe full strength for 3 seconds.You can change that by setting
CARGO_VIBE_PATTERNenvironment variable. For
example, to set it vibe for 1.5 second on 20% strength, you can do:CARGO_VIBE_PATTERN="0.2 1.5s" cargo vibe <cmd>You can also set full patterns of vibes to run, by separating them with slashes
/. Here is one example:CARGO_VIBE_PATTERN="0.4 1s/0.6 1s/0.8 0.75s/1.0 0.25s"Wait, there's more! https://github.com/funkeleinhorn/cargo-shock
To let Cargo Shock trigger your shock collar use:
cargo shock buildTo use it everytime you can
alias cargo="cargo shock".Cargo Shock can also be combined with other tools like Cargo Mommy and Cargo Vibe like this:
cargo mommy vibe shock build ...And they have a really slick site: https://openshock.org/
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That's not what I meant. I understand that rust forces things to be more secure. It's not not like there's some guarantee that rust is automatically safe, and C++ is automatically unsafe.
wrote on last edited by [email protected]I want you to imagine that your comments in this thread were written by an engineer or a surgeon instead of a programmer.
Imagine an engineer saying "Sure, you can calculate the strength of a bridge design based on known material properties and prove that it can hold the design weight, it that doesn't automatically mean that the design will be safer than one where you don't do that". Or "why should I have to prove that my design is safe when the materials could be defective and cause a collapse anyway?"
Or a surgeon saying "just because you can use a checklist to prove that all your tools are accounted for and you didn't leave anything inside the patient's body doesn't mean that you're going to automatically leave something in there if you don't have a checklist". Or "washing your hands isn't a guarantee that the patient isn't going to get an infection, they could get infected some other way too".
A doctor or engineer acting like this would get them fired, sued, and maybe even criminally prosecuted, in that order. This is not the mentality of a professional, and it is something that programming as a profession needs to grow out of.
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I want you to imagine that your comments in this thread were written by an engineer or a surgeon instead of a programmer.
Imagine an engineer saying "Sure, you can calculate the strength of a bridge design based on known material properties and prove that it can hold the design weight, it that doesn't automatically mean that the design will be safer than one where you don't do that". Or "why should I have to prove that my design is safe when the materials could be defective and cause a collapse anyway?"
Or a surgeon saying "just because you can use a checklist to prove that all your tools are accounted for and you didn't leave anything inside the patient's body doesn't mean that you're going to automatically leave something in there if you don't have a checklist". Or "washing your hands isn't a guarantee that the patient isn't going to get an infection, they could get infected some other way too".
A doctor or engineer acting like this would get them fired, sued, and maybe even criminally prosecuted, in that order. This is not the mentality of a professional, and it is something that programming as a profession needs to grow out of.
"washing your hands isn't a guarantee that the patient isn't going to get an infection, they could get infected some other way too".
Every single doctor should know this yes.
It seems people are adding a sentence I didn't say "rust can be unsafe and thus we shouldn't try" on top of the one I did say "programmers should be aware that rust doesn't automatically mean safe".
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"washing your hands isn't a guarantee that the patient isn't going to get an infection, they could get infected some other way too".
Every single doctor should know this yes.
It seems people are adding a sentence I didn't say "rust can be unsafe and thus we shouldn't try" on top of the one I did say "programmers should be aware that rust doesn't automatically mean safe".
wrote on last edited by [email protected]Then you should probably be a little more explicit about that, because I have never, not once in my life, heard someone say "well you know wearing a seatbelt doesn't guarantee you'll survive a car crash" and not follow it up with "that's why seatbelts are stupid and I'm not going to wear one".
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Then you should probably be a little more explicit about that, because I have never, not once in my life, heard someone say "well you know wearing a seatbelt doesn't guarantee you'll survive a car crash" and not follow it up with "that's why seatbelts are stupid and I'm not going to wear one".
wrote on last edited by [email protected]We need to stop attaching shit someone doesn't say to something they did. It makes commutating hostile and makes you an asshole.
Edit: okay that was a bit rude. But it's so frustrating to say something and then have other people go "that means <this other thing you didn't say>!!!11!"
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"C++ compilers also warn you..."
Ok, quick question here for people who work in C++ with other people (not personal projects). How many warnings does the code produce when it's compiled?
I've written a little bit of C++ decades ago, and since then I've worked alongside devs who worked on C++ projects. I've never seen a codebase that didn't produce hundreds if not thousands of lines of warnings when compiling.
Ideally? Zero. I'm sure some teams require "warnings as errors" as a compiler setting for all work to pass muster.
In reality, there's going to be odd corner-cases where some non-type-safe stuff is needed, which will make your compiler unhappy. I've seen this a bunch in 3rd party library headers, sadly. So it ultimately doesn't matter how good my code is.
There's also a shedload of legacy things going on a lot of the time, like having to just let all warnings through because of the handful of places that will never be warning free. IMO its a way better practice to turn a warning off for a specific line.. Sad thing is, it's newer than C++ itself and is implementation dependent, so it probably doesn't get used as much.
