[#EFD205C2FD02E34A0FAE1B9CA2ED6E03A0C2D512]

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    <div>
        <h2>Class lut_chars</h2>
        <p><span>A set of characters</span></p>


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    <div>
        <h3>Synopsis</h3>
        <div>
            <code>
                            </code>
        </div>
        <pre class="source-code cpp">
            class lut_chars;
        </pre>
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            <div>
                <h3> Member Functions</h3>
                    </div>
    <div>
                <h3> Friends</h3>
                    </div>
                    </div>

    <div>
        <h3>Description</h3>
        <p><span>The characters defined by instances of</span> <span>this set are provided upon construction.</span>
<span>The `constexpr` implementation allows</span>
<span>these to become compile-time constants.</span></p>

<h3>Example</h3>
<p><span>Character sets are used with rules and the</span>
<span>functions</span>
<span>find_if</span>
<span>and</span>
<span>find_if_not</span>
<span>.</span></p>

<code>
constexpr lut_chars vowel_chars = "AEIOU" "aeiou";

system::result< core::string_view > rv = parse( "Aiea", token_rule( vowel_chars ) );
</code>

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