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<!DOCTYPE html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><meta name="generator" content="rustdoc"><meta name="description" content="Custom derive for `zerofrom::ZeroFrom`,"><title>ZeroFrom in zerofrom - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Italic-81dc35de.woff2,FiraSans-Regular-0fe48ade.woff2,FiraSans-MediumItalic-ccf7e434.woff2,FiraSans-Medium-e1aa3f0a.woff2,SourceCodePro-Regular-8badfe75.ttf.woff2,SourceCodePro-Semibold-aa29a496.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2"href="../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../static.files/rustdoc-ca0dd0c4.css"><meta name="rustdoc-vars" data-root-path="../" data-static-root-path="../static.files/" data-current-crate="zerofrom" data-themes="" data-resource-suffix="" data-rustdoc-version="1.93.1 (01f6ddf75 2026-02-11) (Arch Linux rust 1:1.93.1-1)" data-channel="1.93.1" data-search-js="search-9e2438ea.js" data-stringdex-js="stringdex-a3946164.js" data-settings-js="settings-c38705f0.js" ><script src="../static.files/storage-e2aeef58.js"></script><script defer src="sidebar-items.js"></script><script defer src="../static.files/main-a410ff4d.js"></script><noscript><link rel="stylesheet" href="../static.files/noscript-263c88ec.css"></noscript><link rel="alternate icon" type="image/png" href="../static.files/favicon-32x32-eab170b8.png"><link rel="icon" type="image/svg+xml" href="../static.files/favicon-044be391.svg"></head><body class="rustdoc derive"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><rustdoc-topbar><h2><a href="#">ZeroFrom</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../zerofrom/index.html">zerofrom</a><span class="version">0.1.6</span></h2></div><div class="sidebar-elems"><div id="rustdoc-modnav"></div></div></nav><div class="sidebar-resizer" title="Drag to resize sidebar"></div><main><div class="width-limiter"><section id="main-content" class="content"><div class="main-heading"><div class="rustdoc-breadcrumbs"><a href="index.html">zerofrom</a></div><h1>Derive Macro <span class="derive">Zero<wbr>From</span>&nbsp;<button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><rustdoc-toolbar></rustdoc-toolbar><span class="sub-heading"><a class="src" href="../src/zerofrom_derive/lib.rs.html#53">Source</a> </span></div><pre class="rust item-decl"><code>#[derive(ZeroFrom)]
{
<span class="comment">// Attributes available to this derive:</span>
#[zerofrom]
}
</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Custom derive for <code>zerofrom::ZeroFrom</code>,</p>
<p>This implements <code>ZeroFrom&lt;Ty&gt; for Ty</code> for types
without a lifetime parameter, and <code>ZeroFrom&lt;Ty&lt;'data&gt;&gt; for Ty&lt;'static&gt;</code>
for types with a lifetime parameter.</p>
<p>Apply the <code>#[zerofrom(clone)]</code> attribute to a field if it doesnt implement
Copy or ZeroFrom; this data will be cloned when the struct is zero_fromed.</p>
<p>Apply the <code>#[zerofrom(maybe_borrow(T, U, V))]</code> attribute to the struct to indicate
that certain type parameters may themselves contain borrows (by default
the derives assume that type parameters perform no borrows and can be copied or cloned).</p>
<p>In rust versions where <a href="https://github.com/rust-lang/rust/issues/114393">this issue</a> is fixed,
<code>#[zerofrom(may_borrow)]</code> can be applied directly to type parameters.</p>
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