Hi is there any way to avoid cast when calling a base class template function from a derived class instance? Suppose the following: class Foo { public: template <class T> void quux() { … } }; class Bar : public Foo { }; Then later on usage of class Bar: Bar bar; bar.quux<int>(); // ERROR ..
Category : c++
I’m trying to install autocomplete on vim and I’m failing miserably lol. I need help my vimrc is this, I really want to fix this and would really appreciate quality from the programming community :)))))))))) : source $VIMRUNTIME/vimrc_example.vimcall plug#begin() Plug ‘tomasiser/vim-code-dark’ Plug ‘itchyny/lightline.vim’Plug ‘preservim/NERDTree’ call plug#end() Source: Windows Que..
To close a Tcp client, which one should be used, io_context.stop() or socket.close()? What aspects should be considered when making such a choice? As far as I know, io_context is thread-safe whereas socket is not. So, I can invoke io_context.stop() in any thread which may be different from the one that has called io_context.run(). But ..
So im working on a class assignment where I need to take a base 2 binary number and convert it to its base 10 equivalent. I wanted to store the binary as a string, then scan the string and skip the 0s, and at 1s add 2^i. Im not able to compare the string at ..
Below I add sockets to epoll and set an application-context index within epoll_event.data.u32. When receiving packets, recv() requires the socket file descriptor. In all the examples events[i].data.fd is used. However, events[i].data.fd and events[i].data.u32 are in a union, so how do I also access my user-context index events[i].data.u32? It looks like it is overwritten with the ..
I’ve almost understood many STL algorithms until I’ve reached the algorithm std::nth_element. I ‘m stuck on it; I don’t know how it works and it does do exactly. For education and understanding sake can someone explain to me how the algorithm std::nth_element works? std::vector<int> v{ 9, 3, 6, 2, 1, 7, 8, 5, 4, 0 ..
Im confused about the use of a pointer to a pointer in DLL functions such as: void deleteNode(Node** head_ref, Node* del) I understand that the function deleteNode is being passed the address to head_ref, but why is this neccesary? Why can’t Node* head_ref be passed? Source: Windows Que..
I’m confused about the use of a pointer-to-pointer in linked-list functions, such as: void deleteNode(Node** head_ref, Node* del) I understand that the function deleteNode() is being passed the address to head_ref, but why is this neccesary? Why can’t Node* head_ref be passed? Source: Windows Que..
On linux, the close() function may fail and errno is set. I guess something similar happens on other systems. Is there a way in the standard library to access the error information on a failed file closing operation? For example: std::fstream fs(path); fs.close(); // <– suppose this fails How do I know what caused the ..
I am completely new to programming in C++. I was trying to pass the value of a pointer (*prog) in the build function that I put below, for it to return its address to the *eval pointer. However, I can´t figure out how to refer to *prog outside of the function. Is there any way ..
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