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<main>
<h1 class="main">Unions</h1>
<p>Just like structs, unions support embedding.</p>
<div class="language-v">struct Rgba32_Component {
r u8
g u8
b u8
a u8
}
union Rgba32 {
Rgba32_Component
value u32
}
clr1 := Rgba32{
value: 0x008811FF
}
clr2 := Rgba32{
Rgba32_Component: Rgba32_Component{
a: 128
}
}
sz := sizeof(Rgba32)
unsafe {
println('Size: ${sz}B,clr1.b: ${clr1.b},clr2.b: ${clr2.b}')
}
</div>
<p>Output: <code>Size: 4B, clr1.b: 136, clr2.b: 0</code></p>
<p>Union member access must be performed in an <code>unsafe</code> block.</p>
<blockquote class="tip">
<p>[!NOTE]
Embedded struct arguments are not necessarily stored in the order listed.</p>
</blockquote>
</main>
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