[#D9BE0DFC81282C1FC53BFD36DE4E5BA998EDE8F9]

<div id="D9BE0DFC81282C1FC53BFD36DE4E5BA998EDE8F9">
    <div>
        <h2>Function <a href="#">params_encoded_ref</a>::
set</h2>
        <p><span>Set a value</span></p>


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    <div>
        <h3>Synopsis</h3>
        <div>
            <code>
                            </code>
        </div>
        <pre class="source-code cpp">
            iterator
set(
    iterator pos,
    pct_string_view value);
        </pre>
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    <div>
        <h3>Description</h3>
        <p><span>This function replaces the value of an</span> <span>element at the specified position.</span></p>

<p><span></span>
<span>All iterators that are equal to</span>
<span>`pos` or come after are invalidated.</span></p>

<div>
<h4>NOTE</h4>
<p><span>The string passed in must not come</span>
<span>from the element being replaced,</span>
<span>or else the behavior is undefined.</span></p>

</div>
<h3>Example</h3>
<code>
url u( "?id=42&id=69" );

u.encoded_params().set( u.encoded_params().begin(), "none" );

assert( u.encoded_query() == "id=none&id=69" );
</code>
<h3>Complexity</h3>
<p><span>Linear in `this->url().encoded_query().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>


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