I created a variadic struct based on a std::tuple. Then, I would like to use a C-style array in the member initializer list with automatic type deduc ...
I created a variadic struct based on a std::tuple. Then, I would like to use a C-style array in the member initializer list with automatic type deduc ...
I struggle to understand the code below. Why can v2 be constructed from an initializer list, but v3 fails? Can someone explain, or point me to a re ...
If you look at standard algorithms like std::ranges::fill and std::ranges::generate, they both seem to use additional parameters to deduce the range v ...
I'm aware that C is a statically typed language and all that. But I'm experimenting with its type deduction abilities and I'm confused as to why it ga ...
I'm quite confused about how Rust infers the exact type of an integer. Type deduction seems to work differently for builtin methods than for traits im ...
I've tried following codes in cppinsights: #include <iostream> #include <string> #include <type_traits> #include <vector> te ...
I have a struct with a method called call which has a const overload. The one and only argument is a std::function which either takes a int reference ...
I have a template class, with an internal method that is itself templated. Consider the following minimal working example As you can see in the ma ...
all. Very quick question. Why statement like below can be compiled with recent gcc or MSVC, but same thing with custom types is not possible? const a ...
I need to define the return types (???? in code) after a sum with 2 parameters pack! My objective is to define a Tuple class (like std::tuple) and to ...
I'm debugging an issue in a large C++ codebase where an attribute of a struct is occasionally being changed to a bad value. Unfortunately, the attribu ...
It is very difficult for me to formulate what I need - sorry - so please make some changes to the question if you think it might make it better unders ...
I want to select one of the standard containers with one template parameter at compile time. Something like How to do this properly? ...
I have a templated class, whose type is to be determined by another sub templated constructor. template <typename V, typename I> class Text{ ...
The following code does not compile. Reported by GCC 8.1.0: error: cannot bind non-const lvalue reference of type 'std::tuple<int&, int& ...
In the following snippet, the function B::f() is a "wrapper" around the function A::f(). But I assume that A::f() return type is an "opaque" type whic ...
Consider the following code: It compiles and when run outputs "abc" to the console. Why does it compile? The first line of code in main should be: ...
See online demo Why does decltype(captured_var) not behave as expected? ...
I have a class B that takes classes like A as a template parameter. Each T has an operator()() that returns an std::array<double, N>. I would ...
It outputs Questions are, what does 1A mean here? (GCC on a linux box) auto && should be a forwarding reference, and in this case s ...