improved version of std::tie
std::tie() does not work well with :doc:`sol::function<function>`'s sol::function_result returns. Use sol::tie instead. Because they're both named tie, you'll need to be explicit when you use sol's by naming it with the namespace (sol::tie), even with a using namespace sol;. Here's an example:
.. literalinclude:: ../../../examples/source/tie.cpp
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