Visitors for std::variant
This lesson explains std::visit, it''s declaration and use.
We'll cover the following...
With the introduction of std::variant, we also got a handy STL function called std::visit.
It can call a given “visitor” on all passed variants.
Visitor Declaration
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template <class Visitor, class... Variants>constexpr visit(Visitor&& vis, Variants&&... vars);
And it will call vis on the currently active type of variants.
If you ...