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<a class="link" href="appendix-i-keywords.html">Appendix I: Keywords</a>
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<a class="link" href="appendix-ii-operators.html">Appendix II: Operators</a>
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<main>
<h1 class="main">Structs with reference fields</h1>
<p>Structs with references require explicitly setting the initial value to a
reference value unless the struct already defines its own initial value.</p>
<p>Zero-value references, or nil pointers, will <strong>NOT</strong> be supported in the future,
for now data structures such as Linked Lists or Binary Trees that rely on reference
fields that can use the value <code>0</code>, understanding that it is unsafe, and that it can
cause a panic.</p>
<div class="language-v">struct Node {
a &Node
b &Node = unsafe { nil } // Auto-initialized to nil, use with caution!
}
// Reference fields must be initialized unless an initial value is declared.
// Zero (0) is OK but use with caution, it's a nil pointer.
foo := Node{
a: 0
}
bar := Node{
a: &foo
}
baz := Node{
a: 0
b: 0
}
qux := Node{
a: &foo
b: &bar
}
println(baz)
println(qux)
</div>
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