while experimenting with the answer from This post, ended up with the following piece of code: which yields: Here, d comes from the comma operat ...
while experimenting with the answer from This post, ended up with the following piece of code: which yields: Here, d comes from the comma operat ...
I'm playing around with C++ concepts and came across an interesting problem. I have the following two custom-defined concepts: As the names suggest ...
This might be a bit of an academic example (in the sense that I don't see it having a real use case as-is), but I have come across this line of though ...
In the following snippet I try to convert a lambda to my own function object, constraining it with a concept based on the invocable_r type trait. Yet ...
Is there a way to detect deleted functions after overload selection (over no viable or ambiguous overloads)? ...
Why is the following code behaving as commented? struct S { template<typename T, typename = std::enable_if_t<!std::is_constructible_v<S, ...
Usually decltype perseveres the ref qualifiers But apparently not when it's argument is obtained from structured binding auto p = std::pair{1, 2.f ...
When inheriting member functions of C++ class, how to use type_traits to prevent them from being used under certain conditions? I want to get Error M ...
Objective: I am implementing a tree data structure which shall make use of recursive interface functions. My tree is composed of nodes and leaf nodes. ...
Maybe the title is not clear, so concretely: #include <type_traits> template<typename T> constexpr int test(T) { return std::is_inte ...
Compilers agree, that the below X and Y are default-constructible, but not trivially (demo). Why are they not trivial? According to cppreference.co ...
This is kind of ugly. Is this the simplest, most readable way to write this in C++17, or can it be cleaned up further? The best I can think of is t ...
We can define a function to insert multiple values to a set like this: template <typename T, typename... U> bool insert_all(T& to, const U. ...
Motivation: In the implementation of P0288 std::move_only_function, I'd like to write a non-allocating special case for conversion from move_only_func ...
consider this example: A recursive function that calls itself with the subtype, until the type in question is no longer iteratable, then that type ...
I have a datastructure meta_array which is instantiated with a variant as type T parameter. The requirement is that the std::variant specialization mu ...
Let's have class Foo and method void use_weak_ptr(std::weak_ptr<Foo>). Is there a way to ensure - preferably at compile time - that the method i ...
I have a struct: When I implement this: It works and calls operator> in Priority when sorting by priority. But, when I change it to this: ...
How to replace the following with std::invoke_result_t? Here's more context: ...
I'm having some difficulties understanding a piece of code that is using typetraits. Suppose I want to define a template function that works on some ...