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nonesuch

struct nonesuch {
    nonesuch() = delete;
    ~nonesuch() = delete;
    nonesuch(const nonesuch&) = delete;
    void operator=(const nonesuch&) = delete;
};

Header: #include <boost/type_traits/nonesuch.hpp>

Type nonesuch is a placeholder type used when the detection idiom fails - see detected.


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