Real-World Example 1
Explore how to simplify comparison operators in C++ using std::tuple and std::tie to create projections of class attributes. Understand how these utilities reduce error-prone if-else blocks and maintain or improve performance. Learn to leverage std::ranges::sort with projections for cleaner sorting code in practical scenarios.
We'll cover the following...
We'll cover the following...
We will end this chapter by examining two examples where std::tuple, std::tie() and some template metaprogramming can help us write clean and efficient code.
Example 1: projections and comparison operators
The need to implement comparison operators for classes dramatically decreased with C++20, but there are still cases where we need to provide a custom comparison function when we want to sort objects in some custom order for a ...