In this post, we will see how to resolve overwrite c++20 spaceship operator for enum class Question: I’m struggling with providing the new spaceship-operator for a enum class. Lets take the following example: But obviously I’m getting something wrong in ...

In this post, we will see how to resolve Can C++-modules be consumed by non-modularized code? Question: I have a rather large codebase, that I want to start porting to C++20-modules. The layout is (roughly) like this: SDK/System > Engine ...

In this post, we will see how to resolve Can switch default statement be optimised out for enum Question: If I have a switch statement that handles all enum cases explicitly, is the compiler allowed to optimise away the default ...

In this post, we will see how to resolve C++20 <chrono>: How to calculate difference between year_month_date? Question: Using C++20’s <chrono>, how can I find the days difference of two year_month_day objects? Best Answer: You can use std::chrono::sys_days to convert ...

In this post, we will see how to resolve How can I fix C++ error C2672 in my code with threads? Question: When I’m trying to compile program with threads, C2672 error (‘invoke’: no matching overloaded function found) is occuring. ...

In this post, we will see how to resolve How to pass a pointer argument to std::format? Question: In the following code, when the first argument is an int and another a pointer casted to void*, the code compiles: If, ...

In this post, we will see how to resolve Can I use C++20 concepts for partial template specialization? Question: I was given an assignment on my computer science class to implement a String<T> class in C++ which would have print ...

In this post, we will see how to resolve Implicit conversion in concepts Question: Consider the following concept, which relies on the operator bool() conversion member function of std::is_lvalue_reference<T> and std::is_const<T>. See the test at https://compiler-explorer.com/z/G5ffeWfbx. Both GCC and MSVC ...

In this post, we will see how to resolve Changing position of C++20 “requires clause” gives different results Question: Consider the following type MyType together with a SFINAE-style detection whether some type U is MyType or not: Then I define ...

In this post, we will see how to resolve Compile-time check for existence of a template specialization of a function using C++20 requires expression Question: I am developing a sort of event system where the event listeners are determined at ...