The following works: #include <vector> #include <ranges> int main() { auto view = std::vector<int>{0,1,2,3,4}; auto s = st ...

It looks like emscripten does not support C++ 20 I try to compile this: command: I get this: Is there any way I can use C++ 20 features (par ...

Consider this code that attempts to create various std::span objects for a vector of raw pointers. span3 compiles fine, but span4 fails with the fo ...

I've been trying to start using std::span<const T> in places where I would have previously used const std::vector<T>&. The only sticki ...

I am using a C library which uses various fixed-sized unsigned char arrays with no null terminator as strings. I've been converting them to std::stri ...

I am trying to initialize a span<const T*> — that is, a list of pointers to const data. However, the rules for const conversion amongst pointers ...

Is std::span a view? My speculation stems from the fact that it does not "own". I have read that it is a reference to ranges here and that it "just ...

Is there a way to pass an empty std::span<int> to a function? I have a function like below: And I want to change it to use std::span instead ...

I want to write a function that can accept any type of contiguous buffer (e.g. std::array, std::vector, raw array, etc) from its call site. I have com ...

I don't think there's any getting away from the need to allocate a buffer to hold the span of string_views. So probably an intermediate std::vector&lt ...

My understanding of std::span is that it is essentially contains pointer into a container, a size, and some useful member functions. I can take a s ...

My best guesses are that committee either forgot about this use case or did not want to use concepts/requires to restrict the span type to something t ...

This example program does not compile, because the transform_view cannot be converted to a std::span: class Foo { private: std::vector<std::st ...

C++20 std::span is a very nice interface to program against. But there doesn't seem to be an easy way to have a span of spans. Here's what I am trying ...

I would like to use my user defined concept as a template type of std::span but template argument deduction does not work as I expected. When I try to ...

I wanted to make an isIn function that takes an std::span. This is my attempt: #include <span> template <typename T1, typename T2> bool ...

I know this might overlap with the question What is a “span” and when should I use one?, but I think the answer to this specific part of the question ...

Consider a large memory container. In this simple example an std::vector<int>: std::span allows me create a lightweight view over the memory. ...

Given some function void func(std::span<std::string_view>), how does one feed this function a raw array of C-strings const char** in the most ef ...

I'm currently writing a library which makes use of C++20's std::span. Compiler library support for std::span is at this point rather scarce. Therefore ...