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SUVersionComparison Protocol Reference
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<h1>SUVersionComparison</h1>
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<p class="aside-title">Objective-C</p>
<pre class="highlight objective_c"><code><span class="k">@protocol</span> <span class="nc">SUVersionComparison</span></code></pre>
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<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">protocol</span> <span class="kt">SUVersionComparison</span></code></pre>
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<p>Provides version comparison facilities for Sparkle.</p>
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<code>
<a name="/c:objc(pl)SUVersionComparison(im)compareVersion:toVersion:"></a>
<a name="//apple_ref/objc/Method/-compareVersion:toVersion:" class="dashAnchor"></a>
<a class="token" href="#/c:objc(pl)SUVersionComparison(im)compareVersion:toVersion:">-compareVersion:<wbr>toVersion:<wbr></a>
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<p>An abstract method to compare two version strings.</p>
<p>Should return NSOrderedAscending if b &gt; a, NSOrderedDescending if b &lt; a,
and NSOrderedSame if they are equivalent.</p>
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<h4>Declaration</h4>
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<p class="aside-title">Objective-C</p>
<pre class="highlight objective_c"><code><span class="k">-</span> <span class="p">(</span><span class="n">NSComparisonResult</span><span class="p">)</span><span class="nf">compareVersion</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">NSString</span> <span class="o">*</span><span class="p">)</span><span class="nv">versionA</span>
<span class="nf">toVersion</span><span class="p">:(</span><span class="n">nonnull</span> <span class="n">NSString</span> <span class="o">*</span><span class="p">)</span><span class="nv">versionB</span><span class="p">;</span></code></pre>
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<p class="aside-title">Swift</p>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">compareVersion</span><span class="p">(</span><span class="n">_</span> <span class="nv">versionA</span><span class="p">:</span> <span class="kt">String</span><span class="p">,</span> <span class="n">toVersion</span> <span class="nv">versionB</span><span class="p">:</span> <span class="kt">String</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="kt">ComparisonResult</span></code></pre>
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