[#ACA41F159E9D7F37AE4AA64BF8F80F3692054398]

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        <h2>Function <a href="#">url_base</a>::
set_scheme</h2>
        <p><span>Set the scheme</span></p>


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        <h3>Synopsis</h3>
        <div>
            <code>
                            </code>
        </div>
        <pre class="source-code cpp">
            url_base&
set_scheme(core::string_view s);
        </pre>
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        <h3>Description</h3>
        <p><span>The scheme is set to the specified</span> <span>string, which must contain a valid</span>
<span>scheme without any trailing colon</span>
<span>(':').</span>
<span>Note that schemes are case-insensitive,</span>
<span>and the canonical form is lowercased.</span></p>

<h3>Example</h3>
<code>
assert( url( "http://www.example.com" ).set_scheme( "https" ).scheme_id() == scheme::https );
</code>
<h3>Complexity</h3>
<p><span>Linear in `this->size() + s.size()`.</span></p>

<h3>Exception Safety</h3>
<p><span>Strong guarantee.</span>
<span>Calls to allocate may throw.</span>
<span>Exceptions thrown on invalid input.</span></p>

<h3>BNF</h3>
<code>
scheme        = ALPHA *( ALPHA / DIGIT / "+" / "-" / "." )
</code>
<h3>Specification</h3>
<li><a href="https://datatracker.ietf.org/doc/html/rfc3986#section-3.1">            3.1. Scheme (rfc3986)</a></li>

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