`std::ranges::transform_view::iterator` is not an InputIterator? | Together C & C++ | Page 1

foggy latch May 4, 2024, 9:27 AM

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Why doesn't this compile?

Compiler Explorer - C++ (x86-64 clang (trunk))

std::vectorstd::string fields;

void insert_many(std::size_t pos, std::spanstd::string keys)
{
auto view = std::views::iota(0uz, keys.size()) | std::views::transform([&](std::size_t i) {
return std::move(keys[i]);
});
static_assert(std::ranges::input_range<decltype(view)>);
fields.insert(fields.cbegin() + pos, view.be...

regal egretBOT May 4, 2024, 9:27 AM

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foggy latch May 4, 2024, 9:27 AM

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std::ranges::transform_view::iterator is not an InputIterator?

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also asked here: https://stackoverflow.com/q/78428407/5740428