I’ve been testing GitHub Copilot recently, to see how far it can be pushed, and I must say that, for C++ applications alone, I’m happy with the results, but not too impressed. This is the opinion I formed after just after a few hours playing with it, and on a very specific problem (DX12 programming), …
Continue reading A coding interview with GPT-3Recently I did a batch of interviews for three positions in my team, and part of my standard interview is a coding question. I tend to focus on problems that will take at most 50% of the time I have, so the ideal question for me is apparently easy, but hides a much better solution …
Continue reading The Coding InterviewI begun to write this two years ago at the beginning of the pandemic, but then forgot to read, and hit publish. I think today is a good day to update, clean up, and publish. You might not be stranded at home anymore, but I think most of the things I wrote are still valid, …
Continue reading On studying C++This code has been compiling for the last several years, despite the fact we have the perfect tool to make this foolish code stop compiling. Adding an ampersand at the end of every copy-assignment and move-assignment operator (or operators of the form <op>=). Why isn’t this best practice already? Or if it is, why isn’t …
Continue reading Should this stop compiling?Updated on 2019/07/03 (long overdue) after this thread on reddit. My post from last week contained a HUGE bug: optionals don’t move their content lose their value on move, so destructor on moved handles is still invoked (thus causing multiple destructions). In the brief discussion on reddit, I proposed to create a optional with move …
Continue reading Moveable optional, really?In the last few days, I needed to create a thin wrapper class that apply RAII patterns to handles coming from a C library. I did this several times in the past, but this time I think I come up with some new solutions, at least for me. In this post, I’ll consider this toy …
Continue reading Wrapping C APIs, and why I wanted a base class to be conditionally copyableOn my recent question on twitter I asked how this piece of code would behave in case of built-in arithmetic types (which I inaccurately referred to as basic numeric types): template<typename T> T f() { T t{}; while (t < t+1) { t++; } return t; } The question is more complex than it seems. …
Continue reading Can you count to infinity?I’m going to be at GDC talking about… Deep Learning applications! No C++ at all! Incredible, isn’t it?
Continue reading GDC 2017Despite the name, perfect forwarding is not so perfect. In the following example, a class B is constructed by passing a : struct A { int x, y; }; struct B { B(A a) { /*…*/ } }; int main() { B b1({1, 2}); } Everything’s ok: {1, 2} is deduced to be the …
Continue reading Not-so-perfect forwardingLast Saturday I’ve been giving two presentations about C++11&14 I originally wrote for NVIDIA internal tech talk at C++ User Group in Udine meetup, invited by Nicola Gigante (@gignico). It has been a very nice meetup, with a lot of nice people, and I’m willing to join them again in the future, if possible. During the first one, …
Continue reading LSIL,TTNG (Last Saturday I Learned, Thanks to Nicola Gigante…)