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<!doctype html>
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<title>Reference: dynamic – De Re @property</title>
<meta name="description" content="
Types
all
Signature Letter
none
Portability
mulle-objc only
Default
NO
">
<meta name="keywords" content="">
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<meta name="twitter:title" content="Reference: dynamic">
<meta name="twitter:description" content="Types all Signature Letter none Portability mulle-objc only Default NO @property( dynamic) char *barUTF8String; dynamic indicates that a property is not backed by an instance variable. The compiler will generate neither an instance variable nor the accessor methods. This is useful for forwarding properties for example: - (void) setBarUTF8String:(char *)...">
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<meta property="og:description" content="Types all Signature Letter none Portability mulle-objc only Default NO @property( dynamic) char *barUTF8String; dynamic indicates that a property is not backed by an instance variable. The compiler will generate neither an instance variable nor the accessor methods. This is useful for forwarding properties for example: - (void) setBarUTF8String:(char *)...">
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<h4>Nat!</h4>
<p>Senior Mull</p>
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<h2>De Re @property <div style="font-size:10px; display: inline-block;">0.0.1</div> <a href="feed.xml"><img class="inline-img" src='images/feed-icon-28x28.png'></a></h2>
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</article>
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<li class="no-bullet"><a class="internal-link" href="/de-re-property/dynamic-directive.html" title="@dynamic">@dynamic</a>
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<li class="no-bullet"><a class="internal-link" href="/de-re-property/assign.html" title="Reference: assign">Reference: assign</a>
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<li class="no-bullet"><a class="internal-link" href="/de-re-property/dynamic.html" title="Reference: dynamic">Reference: dynamic</a>
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<h5> Or read it like a <a href="book.html"><b>book</b></a>.</h6>
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<div id="post-second" class="eight columns">
<div class="title">
<div>
<h2>De Re @property <div style="font-size:10px; display: inline-block;">0.0.1</div> <a href="feed.xml"><img class="inline-img" src='images/feed-icon-28x28.png'></a></h2>
</div>
<h6>© 2025 by Nat!, Mulle kybernetiK. All rights reserved.</h6>
<p>
</div> <!-- title -->
<p>
<div id="main" role="main">
<article>
<h1>Reference: dynamic</h1>
<div>
<table>
<tbody>
<tr>
<td>Types</td>
<td>all</td>
</tr>
<tr>
<td>Signature Letter</td>
<td>none</td>
</tr>
<tr>
<td>Portability</td>
<td>mulle-objc only</td>
</tr>
<tr>
<td>Default</td>
<td>NO</td>
</tr>
</tbody>
</table>
<div class="language-objc highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="k">@property</span><span class="p">(</span> <span class="n">dynamic</span><span class="p">)</span> <span class="kt">char</span> <span class="o">*</span><span class="n">barUTF8String</span><span class="p">;</span>
</code></pre></div></div>
<p><code class="language-plaintext highlighter-rouge">dynamic</code> indicates that a property is not backed by an instance variable. The
compiler will generate neither an instance variable nor the accessor methods.</p>
<p>This is useful for forwarding properties for example:</p>
<div class="language-objc highlighter-rouge"><div class="highlight"><pre class="highlight"><code><span class="k">-</span> <span class="p">(</span><span class="kt">void</span><span class="p">)</span> <span class="nf">setBarUTF8String</span><span class="p">:(</span><span class="kt">char</span> <span class="o">*</span><span class="p">)</span> <span class="n">s</span>
<span class="p">{</span>
<span class="p">[</span><span class="n">_other</span> <span class="nf">setBarUTF8String</span><span class="p">:</span><span class="n">s</span><span class="p">];</span>
<span class="p">}</span>
</code></pre></div></div>
<h2 id="caveat">Caveat</h2>
<p>If an existing non-dynamic property by a base class is redeclared as dynamic, then it’s too late. The instance variable
will have been created already in the base class and the accessor methods will have been generated there as well.</p>
</div>
</article>
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