C++ - Reddit

Jerry Wiltse will talk about Conan the package manager Hi Everyone, CPPDUG, the Dublin C/C++ Meetup Group, will host an online talk entitled "Conan Package Manager for C++ in Practice" by Jerry Wiltse on Monday February 15th. If the topic is of interest to you, please RSVP here: https://www.meetup.com/cppdug/events/276239791 Talk description: The Conan package manager for C++ is useful in both simple and advanced development environments. Join the Conan team to see it in action, with a simple demo using OSS libraries and tools from ConanCenter, and a more complete demo showing how to create and upload a package including different binaries for different platforms to a private repository. Also, learn about many other unique and innovative advanced Conan features along the way. Speaker bio: Jerry Wiltse is a Senior Software Engineer of the Conan development team, and has been dedicated to build engineering for C and C++ since 2016. He is an avid open-source enthusiast but also deeply focused on enterprise development environments. He is also the narrator and creator of the Conan learning track on the JFrog Academy. https://redd.it/lf14je @r_cpp

C++ STL containers overview https://youtu.be/sYkkAP11dk4 https://redd.it/lew25i @r_cpp

Web Push Notification and Admob for SFML C++ Application / Game Hi all, :) The SFML C++ game engine for Web, Android and PC comes with features that allow you to use Web Push Notification and be able to easily monetize your games / applications on mobile with Admob. Features descriptions with their links: ► Web Push Notification: Very useful for contacting your users when you update your web game (this is just one example among many, it's up to you to adapt it according to your needs \^\^). Github link ► The Firebase file and Admob C++ sample are available.. Github link Thanks for reading and have a nice day! https://redd.it/levcy4 @r_cpp

CMake by example: How to enable your libraries to be built as either static or shared? Repo: https://github.com/friendlyanon/cxx-static-shared-example I have created a minimal example with CMake of a project whose library target(s) could be built as either static or shared. The goal of this is to be an educational piece for developers whose libraries don't sufficiently cover this topic. I assumed that at least CMake 3.8 is available, but there are some simplifications in newer versions of CMake, so there are 3 branches showing how to do this on at least 3.12 and at least 3.14 versions of CMake in addition. Please read the readme and let me know what you think of it, would you recommend this to your fellow developers, is there maybe something else that should be included, are there things that should be expanded on a little more? https://redd.it/lesmzb @r_cpp

"Better CMake" by Jefferson Amstutz https://www.youtube.com/playlist?list=PL8i3OhJb4FNV10aIZ8oF0AA46HgA2ed8g https://redd.it/let6x1 @r_cpp

Web Push Notification and Admob for SFML C++ Application / Game Hi all, :) The SFML (is::Engine) C++ game engine for Web, Android and PC is upgraded to version 3.2.1. This time it comes with features that allow you to be in contact with your users and be able to easily monetize your games / applications on mobile. ​ Without further ado here are the new features: ► Web Push Notification Support: Very useful for contacting your users when you update your web game (this is just one example among many, it's up to you to adapt it according to your needs \^\^). Github link ► The Firebase file is available and the Admob sample has been updated. Github link ► Tip for easily updating an is::Engine project. Github link ​ Thanks for reading and have a nice day! https://redd.it/lequth @r_cpp

A C++ virtual-array that uses graphics cards as backing store, beats HDD/SSD-swap in 4kB random access performance and NVMe-swap in sequential access if you have enough pcie bandwidth. https://github.com/tugrul512bit/VirtualMultiArray/wiki/Example:-500million-double-precision-elements-summation https://redd.it/leq0tm @r_cpp

Criei um Programa em C de Gestão Financeira para Linux e Windows https://youtube.com/watch?v=BF809OoXfjM&feature=share https://redd.it/lemjx8 @r_cpp

Yet another CMake tutorial https://www.youtube.com/watch?v=mKZ-i-UfGgQ https://redd.it/lenemq @r_cpp

My code doesn't work. I'm writing a calculator. My code takes input...and then ends. Why isn't isn't it recognizing my operators? Here's my pastebin.<a href="https://pastebin.com/7pQjKitp"/a> https://redd.it/lemnc8 @r_cpp

I'm outraged to see C++ is actually racism and misogyny https://www.youtube.com/watch?v=vaLKm9FE8oo https://redd.it/lelaja @r_cpp

Understanding C++ Coroutines by Example - C++ London 2021; Pavel Novikov https://www.youtube.com/watch?v=7sKUAyWXNHA https://redd.it/lek2j1 @r_cpp

What's the purpose of -Os if -O2 makes binaries even smaller than the -Os itself? (If I'm not the only one it happens to) https://redd.it/lej8zl @r_cpp

function to check if an element is a member of a vector? How can I write a function to check if something is an element of a vector? I have: template<class T> bool isIn(const T& o, const vector<T>& v){ return std::find(v.begin(), v.end(), o) != v.end(); } template<class T> bool isIn(const T& o, const vector<const T>& v){ return std::find(v.begin(), v.end(), o) != v.end(); } Is there a simple way to avoid the code duplication here - one version for vector<T> and one for vector<const T> ? https://redd.it/leglhs @r_cpp

Pointer and arrays Hello, i'm tryoing to access a multidimensional array with a pointer but I can't access to the 2nd column, how can I do it ? Here is an example. Thanks double arr[5][2]; function(&arr[0][0]); &#x200B; void function(double* ptr) {code} https://redd.it/le7bn3 @r_cpp

Cast a pointer from a parent class to a concrete subclass? What is the best way to cast a pointer to class `A` to a pointer to class `B`, where `B` is a derived class of `A`? That is, suppose class A {...} class B : public A{...} A* x = method_returning_pointer_to_A(); There are two ways I use: 1. with `dynamic_cast`: ```` B *y = dynamic_cast<B*>(x); ```` 2. By using a virtual method to handle the casts: ```` class A { virtual B* convert_to_B() {return NULL;} virtual B* convert_to_B()const{return NULL;} }; class B : public A{ B*convert_to_B(){return this;} B*convert_to_B()const{return this;} }; ```` Then invoke with ```` B* y = x->convert_to_B(); ```` Obviously this is used for large class hierarchies. I believe the two versions, `const` and non-`const`, are necessary depending on the CV status of `x` (?) Is one method preferable or more conformant than the other? The `dynamic_cast` way is kind of wordy and unaesthetic, so usually I prefer using specific methods. https://redd.it/le7fxg @r_cpp

Best way to self teach C++ ? Hi all I’m a young woman who has been programming since age 16 just as a part time fun hobby. I started actually pursuing computer science in college now and I have a pretty solid knowledge of programming in C. With doing some research I’ve concluded that C++ is definitely what I want to pursue but I want to self teach before I start taking courses in college and I’d like to learn the language in about a years time. How did you learn C++ any great resources that you can recommend to a newbie? So far I’ve just been watching some tutorials on YouTube. Any advice is helpful, thank you! https://redd.it/le8ayc @r_cpp

Modern C++: Snippets and Examples Hi everyone, These are GitHub Pages with snippets for Modern C++: We often need to copy and paste some snippets to code more productively. Snippets can help us when it's not easy to remember all high levels features Modern C++ has to offer. This repository contains lots of organized, reusable, and safe snippets for Modern C++. All snippets are available in GitHub pages in a convenient way for copying and pasting. https://alandefreitas.github.io/moderncpp/ https://redd.it/le52s3 @r_cpp

Hot reloading c++ for rapid development with the help of fungos/cr https://www.polymonster.co.uk/blog/live-reloading https://redd.it/le4nre @r_cpp

OpenSSL on windows?! Hi, 3-day noob speaking. When tryinh to use httplib.h I get the following error: 'openssl/err.h': No such file or directory The more I search on how to install openssl on windows the more confused I get. I have VScode with cl.exe as a compiler. I also have git installed. How do I do this? https://redd.it/le1mcn @r_cpp