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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="Implements `DynamicDataProvider` for a marker type `S` on a type that already implements `DynamicDataProvider` or `DataProvider` for one or more `M`, where `M` is a concrete type that is convertible to `S` via `UpcastDataPayload`."><title>impl_dynamic_data_provider in icu_provider::dynutil - 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="icu_provider" 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 macro"><!--[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="#">impl_dynamic_data_provider</a></h2></rustdoc-topbar><nav class="sidebar"><div class="sidebar-crate"><h2><a href="../../icu_provider/index.html">icu_<wbr>provider</a><span class="version">2.1.1</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">impl_<wbr>dynamic_<wbr>data_<wbr>provider</a></h2><h3><a href="#">Sections</a></h3><ul class="block top-toc"><li><a href="#wrapping-dataprovider" title="Wrapping DataProvider">Wrapping DataProvider</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="index.html">In icu_<wbr>provider::<wbr>dynutil</a></h2></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">icu_provider</a>::<wbr><a href="index.html">dynutil</a></div><h1>Macro <span class="macro">impl_<wbr>dynamic_<wbr>data_<wbr>provider</span> <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/icu_provider/dynutil.rs.html#78-160">Source</a> </span></div><pre class="rust item-decl"><code>macro_rules! impl_dynamic_data_provider {
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($provider:ty, $arms:tt, $one:path, $($rest:path),+) => { ... };
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($provider:ty, { $($ident:ident = $marker:path => $struct_m:ty),+, $(_ => $struct_d:ty,)?}, $dyn_m:ty) => { ... };
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($provider:ty, [ $($(#[$cfg:meta])? $struct_m:ty),+, ], $dyn_m:path) => { ... };
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}</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Implements <a href="../trait.DynamicDataProvider.html" title="trait icu_provider::DynamicDataProvider"><code>DynamicDataProvider</code></a> for a marker type <code>S</code> on a type that already implements
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<a href="../trait.DynamicDataProvider.html" title="trait icu_provider::DynamicDataProvider"><code>DynamicDataProvider</code></a> or <a href="../trait.DataProvider.html" title="trait icu_provider::DataProvider"><code>DataProvider</code></a> for one or more <code>M</code>, where <code>M</code> is a concrete type
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that is convertible to <code>S</code> via <a href="trait.UpcastDataPayload.html" title="trait icu_provider::dynutil::UpcastDataPayload"><code>UpcastDataPayload</code></a>.</p>
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<h3 id="wrapping-dataprovider"><a class="doc-anchor" href="#wrapping-dataprovider">§</a>Wrapping DataProvider</h3>
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<p>If your type implements <a href="../trait.DataProvider.html" title="trait icu_provider::DataProvider"><code>DataProvider</code></a>, pass a list of markers as the second argument.
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This results in a <code>DynamicDataProvider</code> that delegates to a specific marker if the marker
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matches or else returns <a href="(crate::DataErrorKind::MarkerNotFound)"><code>DataErrorKind::MarkerNotFound</code></a>.</p>
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</div></details></section></div></main></body></html> |