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HTML
294 lines
13 KiB
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Hashable Reference
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<a href="Other%20Typealiases.html#/s:15SourceryRuntime0A8Modifiera">SourceryModifier</a>
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<article class="main-content">
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<section>
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<section class="section">
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<h2 id='i-want-to-generate-code-hashable-code-implementation' class='heading'>I want to generate <code>Hashable</code> implementation</h2>
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<p>Template used to generate hashing for all types that conform to <code>:AutoHashable</code>, allowing us to avoid writing boilerplate code.</p>
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<p>It adds <code>:Hashable</code> conformance to all types, except protocols (because it would require turning them into PAT’s).
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For protocols it’s just generating <code>var hashValue</code> comparator.</p>
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<h3 id='a-href-https-github-com-krzysztofzablocki-sourcery-blob-master-templates-templates-autohashable-stencil-stencil-template-a' class='heading'><a href="https://github.com/krzysztofzablocki/Sourcery/blob/master/Templates/Templates/AutoHashable.stencil">Stencil template</a></h3>
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<h4 id='available-variable-annotations' class='heading'>Available variable annotations:</h4>
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<ul>
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<li><code>skipHashing</code> allows you to skip variable from being compared.</li>
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<li><code>includeInHashing</code> is only applied on enums and allows us to add some computed variable into hashing logic</li>
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</ul>
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<h4 id='example-output' class='heading'>Example output:</h4>
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<pre class="highlight swift"><code><span class="c1">// MARK: - AdNodeViewModel AutoHashable</span>
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<span class="kd">extension</span> <span class="kt">AdNodeViewModel</span><span class="p">:</span> <span class="kt">Hashable</span> <span class="p">{</span>
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<span class="kd">internal</span> <span class="k">var</span> <span class="nv">hashValue</span><span class="p">:</span> <span class="kt">Int</span> <span class="p">{</span>
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<span class="k">return</span> <span class="nf">combineHashes</span><span class="p">(</span><span class="n">remoteAdView</span><span class="o">.</span><span class="n">hashValue</span><span class="p">,</span> <span class="n">hidesDisclaimer</span><span class="o">.</span><span class="n">hashValue</span><span class="p">,</span> <span class="n">type</span><span class="o">.</span><span class="n">hashValue</span><span class="p">,</span> <span class="n">height</span><span class="o">.</span><span class="n">hashValue</span><span class="p">,</span> <span class="n">attributedDisclaimer</span><span class="o">.</span><span class="n">hashValue</span><span class="p">,</span> <span class="mi">0</span><span class="p">)</span>
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<span class="p">}</span>
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<span class="p">}</span>
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</code></pre>
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