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<h1 id='function-parameter-count' class='heading'>Function Parameter Count</h1>
<p>Number of function parameters should be low.</p>
<ul>
<li><strong>Identifier:</strong> function_parameter_count</li>
<li><strong>Enabled by default:</strong> Yes</li>
<li><strong>Supports autocorrection:</strong> No</li>
<li><strong>Kind:</strong> metrics</li>
<li><strong>Analyzer rule:</strong> No</li>
<li><strong>Minimum Swift compiler version:</strong> 5.0.0</li>
<li><strong>Default configuration:</strong> severity: warning: 5, error: 8, ignores_default_parameters: true</li>
</ul>
<h2 id='non-triggering-examples' class='heading'>Non Triggering Examples</h2>
<pre class="highlight swift"><code><span class="nf">init</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="nf">init</span> <span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="p">`</span><span class="nv">init</span><span class="p">`(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="nf">init</span><span class="p">?(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">init</span><span class="p">?</span><span class="o">&lt;</span><span class="kt">T</span><span class="o">&gt;</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">T</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">init</span><span class="p">?</span><span class="o">&lt;</span><span class="kt">T</span><span class="p">:</span> <span class="kt">String</span><span class="o">&gt;</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">T</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">f2</span><span class="p">(</span><span class="nv">p1</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">p2</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{</span> <span class="p">}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">f</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">x</span><span class="p">:</span> <span class="kt">Int</span> <span class="o">=</span> <span class="mi">42</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">func</span> <span class="nf">f</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="p">[</span><span class="kt">Int</span><span class="p">],</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="o">-&gt;</span> <span class="p">[</span><span class="kt">Int</span><span class="p">]</span> <span class="p">{</span>
<span class="k">let</span> <span class="nv">s</span> <span class="o">=</span> <span class="n">a</span><span class="o">.</span><span class="n">flatMap</span> <span class="p">{</span> <span class="nv">$0</span> <span class="k">as?</span> <span class="p">[</span><span class="kt">String</span><span class="p">:</span> <span class="kt">Int</span><span class="p">]</span> <span class="p">}</span> <span class="p">??</span> <span class="p">[]}}</span>
</code></pre>
<pre class="highlight swift"><code><span class="k">override</span> <span class="kd">func</span> <span class="nf">f</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<h2 id='triggering-examples' class='heading'>Triggering Examples</h2>
<pre class="highlight swift"><code><span class="err"></span><span class="kd">func</span> <span class="nf">f</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="err"></span><span class="kd">func</span> <span class="nf">initialValue</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">private</span> <span class="err"></span><span class="kd">func</span> <span class="nf">f</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span> <span class="o">=</span> <span class="mi">2</span><span class="p">,</span> <span class="nv">g</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
</code></pre>
<pre class="highlight swift"><code><span class="kd">struct</span> <span class="kt">Foo</span> <span class="p">{</span>
<span class="nf">init</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}</span>
<span class="err"></span><span class="kd">func</span> <span class="nf">bar</span><span class="p">(</span><span class="nv">a</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">b</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">c</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">d</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">e</span><span class="p">:</span> <span class="kt">Int</span><span class="p">,</span> <span class="nv">f</span><span class="p">:</span> <span class="kt">Int</span><span class="p">)</span> <span class="p">{}}</span>
</code></pre>
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