I am studying how to use deduction guides. I composed this program. template<typename T> struct Test { void f() { cout << std::is_same_v<T, std::size_t> << endl; } T t; }; Test(int) -> Test<std::size_t>; int main() { Test t1(1.2); t1.f(); } I expected the deduction guide will only kick in when if I pass an integer

I intend for my question to be a follow up to: How do we use void_t for SFINAE?. I understand how void_t is used. I do not understand why it is necessary. Let’s take the example from that SO question and remove the void_t template< class , class = void > struct has_member : std::false_type

Let’s say I have a class with a consteval constructor that ensures a valid value at compile time. (There’s also a std::expected-returning factory method that validates its argument at runtime, but that’s irrelevant for this question.) class ConstevalConstructible { public: consteval ConstevalConstructible(int value) : value_(value) { // Validate value and fail compile if invalid. }

{{define "scripts"}} <script src="/admin/assets/js/iziToast.min.js"></script> <script> iziToast.show({ title: 'Hey', message: 'What would you like to add?' }); </script> {{end}} Although I define it as a script, I cannot get the message on the site when I run it. I was expecting ‘What would you like to add?’ but I get ‘Uncaught ReferenceError: iziToast is not defined’

In the following code, when calling arr.begin() on a const Array<10> object, it fails to find the const function Accessor::begin() const, and instead only tries MutableAccessor::begin() and fails because arr is const. When using arr.cbegin(), it works correctly. Also when both the const and non-const overload of a function are defined in the same class,

I’m trying to implement functions chain, that get bunch of different functions and member functions at compile time and execute them one by one and stop execution if processing function fails. It may be any count of functions. Now I’m stuck on the fact that std::tuple::get doesn’t accept counted variable as template parameter. How can

I am trying to create a custom TextBox Template in WPF. My TextBox has a 1px border around it, this border has a margin of 8px, this is all simple stuff, no issues here. The issue I have is that when I use my TextBox and define: <TextBox Template="MyTextBoxTemplate" Height="100"> The actual output height of

The following code doesn’t work, it fails because it cannot find a constructor with a <int, bool> signature. I know can’t specify explicitely the template parameters in the case of a constructor. Why does it fail template parameter deduction? Is there any way to make it work? I know I can use a template factory

When I create a PR, I first created a branch and committed changes. With the commits I have fields such as: a description (comment/message) the commit UUID the date / time when the commit happened others… My main problem, at the moment, is the comment from the first commit appears BEFORE the template. I’d like

I’m using the Subject/Observer pattern in a way that I have a class observing 2 kinds of event: class manager : public observer<eventA>, observer<eventB> To be valid, the manager class must implement an Update function for each event type, but what could I do if those functions can basically be written by a template? So,