Which book is this?

professional c++

professional c++

#res The good books are mentioned there

/ban

I am studying C++11, and it is said that when an object or value is thrown as an exception, when an exception occurs, the original object goes out of scope and is freed from memory as it moves up the stack, so clone always occurs once or more. So, when creating an exception class, need to create a clone constructor. What I'm curious about here is If none of the class' internal members uses dynamic memory allocation, can I use the default clone constructor?

the original object that's being thrown will always be copied once when constructing the exception record. it will not be copied anymore if you catch the exception object by reference. if no class members use dynamic allocation you can use the default copy constructor

the original object that's being thrown will always be copied once when constructing the exception record. C++17 changes this with new rules for temporary materialisation.

no it does not > Throwing an exception copy-initializes (11.6, 15.8) a temporary object https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2017/n4659.pdf page 440 (or 426 if you look at the page number on the document)

Is c++11 or 14 still the most popular standard, for employment?

I think C++17 would be the most popular now that all popular compilers have been supporting it completely for close to 5 years

I am just not so sure, what product manage, or hr might think of...

maybe I should just focus on the "classic" standards

if someone knows c++20, I would not expect a company using c++11 for their codebase would think "no we don't want people with modern knowledge here!!" but if someone only knows c++11, and a company uses c++20, the company might think "hm, they might be stuck in the past and might not be eager to evolve. let's skip this applicant" so I think learning the newer standard is always a plus, regardless of whether someone wants developers for a c++03 codebase or a c++23 codebase

I have seen some companies that are too "small" and "old-fashioned" to afford a code refactor, and the hrs are seeking for people for "maintainance" instead of "evolvement" of the legacy codes. This surely makes me wonder the meaning of studying the latest standards.

That doesn't mean you don't learn the new standards. Yeah there are changes and footguns you need to consider but it largely depends on your job position.

if someone knows c++20, I would not expect a company using c++11 for their codebase would think "no we don't want people with modern knowledge here!!" but if someone only knows c++11, and a company uses c++20, the company might think "hm, they might be stuck in the past and might not be eager to evolve. let's skip this applicant" so I think learning the newer standard is always a plus, regardless of whether someone wants developers for a c++03 codebase or a c++23 codebase

Hello member of C/C++ community. In one of our project we have dsp code which was written with Python. But due to lack of speed and memory usage concerns project manager wants the change for language. They want to know which one to use so I started to search. It will be RF based DSP which means also going to use RtlSdr for signal capture. Which one I should pick C or C++ and why? Any suggestion would be highly appreciated. Kind Regards

What do you mean by DSP Code written in Python?

It was, let say, more of a trial or debug code. We have final structure but its written with python. About 1000-1500 lines of python code but it doesn't efficient. So we want to change the language but I am not an expertise on either C nor C++. So, which one should be better alternative

Does it run on the DSP? Or compiles to DSP or what?

Oh, pure python code which was binded to api (from django) and running as task in background with celery. I can call with some small implementation and make it run as co-routine/async-task

Interesting. I'd always choose C++ over C. It has more abstraction capabilities thus generally easier to use because, for example, the memory management is semi-automatic and you don't need to worry about forgetting to free resources. If you use C++ correctly of course. If some features in C++ are redundant to you, then you can just not use them

Where i can find Fibonacci series program for c++

Where i can find Fibonacci series program for c++

It was, let say, more of a trial or debug code. We have final structure but its written with python. About 1000-1500 lines of python code but it doesn't efficient. So we want to change the language but I am not an expertise on either C nor C++. So, which one should be better alternative

maybe you can use an alternative interpreter like pypy and see if it improves the performance enough before making a drastic change such as a language switch

Hmm, its not my call actually but I can suggest that.

Tumhari ma ki chut hai bhen ke lowdo.... machudao.... tumhari bhen ki chut... gand maro

Thanks for advice. I'll check the libraries for rtlsdr usage. At the end of the day, what I need is a program that can run as background application. So, no ui is needed. And I have little idea with C but non with C++. As I said my biggest concern is RtlSdr compability. Anyway, thanks again 🙏

Definitely a Pajeet

If it runs with C, it runs with C++ But the better approach is to find C++ wrapper or write it itself. It's needed to raise the abstraction level. If you need some resources to getting to know C++, and you're a professional programmer already, I suggest the following * C++ as a Second Language on YouTube by Chromium develovers * C++ Core Guidelines * C++ best practices by Turner * Books by Scott Meyers

Tumhari ma ki chut hai bhen ke lowdo.... machudao.... tumhari bhen ki chut... gand maro

If it runs with C, it runs with C++ But the better approach is to find C++ wrapper or write it itself. It's needed to raise the abstraction level. If you need some resources to getting to know C++, and you're a professional programmer already, I suggest the following * C++ as a Second Language on YouTube by Chromium develovers * C++ Core Guidelines * C++ best practices by Turner * Books by Scott Meyers

Tumhari ma ka bhosda

That's 2/2 warnings; No competition is banned! Reasons: 1: stupid question and non English 2: buy

Imagine what'll happen when he gets to stl and beyond

If it runs with C, it runs with C++ But the better approach is to find C++ wrapper or write it itself. It's needed to raise the abstraction level. If you need some resources to getting to know C++, and you're a professional programmer already, I suggest the following * C++ as a Second Language on YouTube by Chromium develovers * C++ Core Guidelines * C++ best practices by Turner * Books by Scott Meyers

Well, this is very clear and deep answer. Which mean I decided. Thanks again for all of you.

What should I do with this error when running the code in Ubuntu? "terminate called after throwing an instance of 'std::bad_alloc' what(): std::bad_alloc Aborted"

Don't try allocate the more memory than you physically can...

I need to optimize my code in terms of memory, but I don't know which part of the code and how

I need to optimize my code in terms of memory, but I don't know which part of the code and how

I need to optimize my code in terms of memory, but I don't know which part of the code and how

I need to optimize my code in terms of memory, but I don't know which part of the code and how

"What part of the code" is a really good question to start with, and "how" really depends on it. Most of the time it is unreasonable to try optimizing everything (may end up optimizing 1% of memory while 90% of it is accidentally eaten by some not-fixed bug). I recommend finding a memory profiler that suits your needs. For example, if you can use Valgrind it has "massif" memory profiler included. Valgrind also includes tools to check for memory leaks (when you allocate memory and never clean it), which may contribute to high memory consumption as well. https://postimg.cc/v1rp7S7H Here's an example from massif-visualizer that I've just run on one of my tests, I could quickly see that I have some render data that eats up most of the space, and I know that's a bug because render should be disabled so this data shouldn't even be there. Your case may be more complex than this, but having a good tool for this in your toolbox may make it much easier to reason about these problems.

Can I send my code and check for me?

Can I send my code and check for me?

No, it will be beneficial for you to find a profiler and learn how to use it

It will beneficial for him/her someone could show an example. Not everybody will find themselves everything they need... that's why zahra asked here

They already did. Plenty of youtube videos out there to learn how to use massif memory profiler