[#A5F9E7DAFA3E899512FD146FE27B19D9B96DF2A3]

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        <h2>Class is_rule</h2>
        
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        <h3>Synopsis</h3>
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            <code>
                            </code>
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        <pre class="source-code cpp">
            template<
    class T,
    class = void>
struct is_rule
    : std::false_type;
        </pre>
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