Migrating Our Codebase to C++20 – A Field Report

I thought references must not be used in std containers, at least not without std::reference_wrapper.

So std::tuple<const query&> is just not correct, right?

A `std::tuple` is not a container in the STL sense (it also doesn't provide iterators and you can't add or delete elements from it), so there is no issue in that regard. For example, `std::tie()` is a function in the standard library that returns a tuple of references.

Migrating Our Codebase to C++20 – A Field Report (tenzir.com)

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