https://mkz.me/til/zig/ Recent content in Zig on mkz.me Hugo en-us Sun, 22 Sep 2024 10:17:15 +0200 https://mkz.me/til/zig/objects-with-fieldparentptr/ Sun, 22 Sep 2024 10:17:15 +0200 https://mkz.me/til/zig/objects-with-fieldparentptr/ <p><code>fieldParentPtr</code> can be useful in case it is required to create multiple kind of objects all based on a common type that can be passed to generic functions and then coerced to their original type. A usecase for this is a <code>Value</code> object that then will contain <code>string</code>, <code>number</code>, <code>bool</code>, <code>function</code>, <code>instance</code> when building a new language.</p> <div class="highlight"><pre tabindex="0" class="chroma"><code class="language-sh" data-lang="sh"><span class="line"><span class="cl">$ mkdir zig-objects <span class="o">&amp;&amp;</span> <span class="nb">cd</span> zig-objects </span></span><span class="line"><span class="cl">$ zig init </span></span><span class="line"><span class="cl">info: created build.zig </span></span><span class="line"><span class="cl">info: created build.zig.zon </span></span><span class="line"><span class="cl">info: created src/main.zig </span></span><span class="line"><span class="cl">info: created src/root.zig </span></span><span class="line"><span class="cl">info: see <span class="sb">`</span>zig build --help<span class="sb">`</span> <span class="k">for</span> a menu of options </span></span></code></pre></div><p>Defining the object in <code>object.zig</code>:</p>