Structures with templates

#Introduction
- #Example

In C++, you cannot directly create template structures, but you can create template classes that mimic the behavior of structures. Templates in C++ are primarily designed for classes and functions, but you can use them to achieve similar functionality for structures by using template classes.

Here's an example of how you might create a template class that behaves like a structure:

#include <iostream>

template <typename T>
class MyStruct {
public:
    T data1;
    T data2;

    MyStruct(T val1, T val2) : data1(val1), data2(val2) {} // it is simple way of initialising data1=val1 and data2=val2, in this case {} will be empty as its role has been done by initialising list. Here val1 and val2 are arguments passed by user.

    void display() {
        std::cout << "Data 1: " << data1 << ", Data 2: " << data2 << std::endl;
    }
};

int main() {
    MyStruct<int> intStruct(42, 77); 
    intStruct.display();

    MyStruct<double> doubleStruct(3.14, 2.718);
    doubleStruct.display();

    return 0;
}

A quick run of the above code block in visual mode of neovim runs by
:!g++ -std=c++20 /tmp/vim_cpp_exec.cpp -o /tmp/vim_cpp_exec && /tmp/vim_cpp_exec

which one can set the keymapping in vimrc file by
vnoremap <leader>pp :w! /tmp/vim_cpp_exec.cpp<CR>:!g++ -std=c++20 /tmp/vim_cpp_exec.cpp -o /tmp/vim_cpp_exec && /tmp/vim_cpp_exec<CR>

Just selecting the code and pressing ',pp' (here <leader> is mapped to ',')
Which gives the following ouput:
Data 1: 42, Data 2: 77
Data 1: 3.14, Data 2: 2.718

Contents

Introduction

Example