1 <!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="Provides a `Visitor` access to each element of a sequence in the input."><title>SeqAccess in bdk_chain::bitcoin::hashes::serde::de - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-46f98efaafac5295.ttf.woff2,FiraSans-Regular-018c141bf0843ffd.woff2,FiraSans-Medium-8f9a781e4970d388.woff2,SourceCodePro-Regular-562dcc5011b6de7d.ttf.woff2,SourceCodePro-Semibold-d899c5a5c4aeb14a.ttf.woff2".split(",").map(f=>`<link rel="preload" as="font" type="font/woff2" crossorigin href="../../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../../static.files/normalize-76eba96aa4d2e634.css"><link rel="stylesheet" href="../../../../../static.files/rustdoc-dd39b87e5fcfba68.css"><meta name="rustdoc-vars" data-root-path="../../../../../" data-static-root-path="../../../../../static.files/" data-current-crate="bdk_chain" data-themes="" data-resource-suffix="" data-rustdoc-version="1.80.0-nightly (78a775127 2024-05-11)" data-channel="nightly" data-search-js="search-d52510db62a78183.js" data-settings-js="settings-4313503d2e1961c2.js" ><script src="../../../../../static.files/storage-118b08c4c78b968e.js"></script><script defer src="sidebar-items.js"></script><script defer src="../../../../../static.files/main-20a3ad099b048cf2.js"></script><noscript><link rel="stylesheet" href="../../../../../static.files/noscript-df360f571f6edeae.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../../static.files/favicon-32x32-422f7d1d52889060.png"><link rel="icon" type="image/svg+xml" href="../../../../../static.files/favicon-2c020d218678b618.svg"></head><body class="rustdoc trait"><!--[if lte IE 11]><div class="warning">This old browser is unsupported and will most likely display funky things.</div><![endif]--><nav class="mobile-topbar"><button class="sidebar-menu-toggle" title="show sidebar"></button><a class="logo-container" href="../../../../../bdk_chain/index.html"><img src="https://github.com/bitcoindevkit/bdk/raw/master/static/bdk.png" alt=""></a></nav><nav class="sidebar"><div class="sidebar-crate"><a class="logo-container" href="../../../../../bdk_chain/index.html"><img src="https://github.com/bitcoindevkit/bdk/raw/master/static/bdk.png" alt="logo"></a><h2><a href="../../../../../bdk_chain/index.html">bdk_chain</a><span class="version">0.20.0</span></h2></div><h2 class="location"><a href="#">SeqAccess</a></h2><div class="sidebar-elems"><section><h3><a href="#required-associated-types">Required Associated Types</a></h3><ul class="block"><li><a href="#associatedtype.Error">Error</a></li></ul><h3><a href="#required-methods">Required Methods</a></h3><ul class="block"><li><a href="#tymethod.next_element_seed">next_element_seed</a></li></ul><h3><a href="#provided-methods">Provided Methods</a></h3><ul class="block"><li><a href="#method.next_element">next_element</a></li><li><a href="#method.size_hint">size_hint</a></li></ul><h3><a href="#foreign-impls">Implementations on Foreign Types</a></h3><ul class="block"><li><a href="#impl-SeqAccess%3C'de%3E-for-%26mut+A">&mut A</a></li></ul><h3><a href="#object-safety">Object Safety</a></h3><h3><a href="#implementors">Implementors</a></h3></section><h2><a href="index.html">In bdk_chain::bitcoin::hashes::serde::de</a></h2></div></nav><div class="sidebar-resizer"></div><main><div class="width-limiter"><rustdoc-search></rustdoc-search><section id="main-content" class="content"><div class="main-heading"><h1>Trait <a href="../../../../index.html">bdk_chain</a>::<wbr><a href="../../../index.html">bitcoin</a>::<wbr><a href="../../index.html">hashes</a>::<wbr><a href="../index.html">serde</a>::<wbr><a href="index.html">de</a>::<wbr><a class="trait" href="#">SeqAccess</a><button id="copy-path" title="Copy item path to clipboard">Copy item path</button></h1><span class="out-of-band"><a class="src" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1710">source</a> · <button id="toggle-all-docs" title="collapse all docs">[<span>−</span>]</button></span></div><pre class="rust item-decl"><code>pub trait SeqAccess<'de> {
2 type <a href="#associatedtype.Error" class="associatedtype">Error</a>: <a class="trait" href="trait.Error.html" title="trait bdk_chain::bitcoin::hashes::serde::de::Error">Error</a>;
5 fn <a href="#tymethod.next_element_seed" class="fn">next_element_seed</a><T>(
8 ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<T as <a class="trait" href="trait.DeserializeSeed.html" title="trait bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed">DeserializeSeed</a><'de>>::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed::Value">Value</a>>, Self::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a>>
9 <span class="where">where T: <a class="trait" href="trait.DeserializeSeed.html" title="trait bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed">DeserializeSeed</a><'de></span>;
12 fn <a href="#method.next_element" class="fn">next_element</a><T>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><T>, Self::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a>>
13 <span class="where">where T: <a class="trait" href="../trait.Deserialize.html" title="trait bdk_chain::bitcoin::hashes::serde::Deserialize">Deserialize</a><'de></span> { ... }
14 <span class="item-spacer"></span> fn <a href="#method.size_hint" class="fn">size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>> { ... }
15 }</code></pre><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Provides a <code>Visitor</code> access to each element of a sequence in the input.</p>
16 <p>This is a trait that a <code>Deserializer</code> passes to a <code>Visitor</code> implementation,
17 which deserializes each item in a sequence.</p>
18 <h2 id="lifetime"><a class="doc-anchor" href="#lifetime">§</a>Lifetime</h2>
19 <p>The <code>'de</code> lifetime of this trait is the lifetime of data that may be
20 borrowed by deserialized sequence elements. See the page <a href="https://serde.rs/lifetimes.html">Understanding
21 deserializer lifetimes</a> for a more detailed explanation of these lifetimes.</p>
22 <h2 id="example-implementation"><a class="doc-anchor" href="#example-implementation">§</a>Example implementation</h2>
23 <p>The <a href="https://serde.rs/data-format.html">example data format</a> presented on the website demonstrates an
24 implementation of <code>SeqAccess</code> for a basic JSON data format.</p>
25 </div></details><h2 id="required-associated-types" class="section-header">Required Associated Types<a href="#required-associated-types" class="anchor">§</a></h2><div class="methods"><details class="toggle" open><summary><section id="associatedtype.Error" class="method"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1713">source</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a>: <a class="trait" href="trait.Error.html" title="trait bdk_chain::bitcoin::hashes::serde::de::Error">Error</a></h4></section></summary><div class="docblock"><p>The error type that can be returned if some error occurs during
27 </div></details></div><h2 id="required-methods" class="section-header">Required Methods<a href="#required-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="tymethod.next_element_seed" class="method"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1720-1722">source</a><h4 class="code-header">fn <a href="#tymethod.next_element_seed" class="fn">next_element_seed</a><T>(
30 ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<T as <a class="trait" href="trait.DeserializeSeed.html" title="trait bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed">DeserializeSeed</a><'de>>::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed::Value">Value</a>>, Self::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a>><div class="where">where
31 T: <a class="trait" href="trait.DeserializeSeed.html" title="trait bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed">DeserializeSeed</a><'de>,</div></h4></section></summary><div class="docblock"><p>This returns <code>Ok(Some(value))</code> for the next value in the sequence, or
32 <code>Ok(None)</code> if there are no more remaining items.</p>
33 <p><code>Deserialize</code> implementations should typically use
34 <code>SeqAccess::next_element</code> instead.</p>
35 </div></details></div><h2 id="provided-methods" class="section-header">Provided Methods<a href="#provided-methods" class="anchor">§</a></h2><div class="methods"><details class="toggle method-toggle" open><summary><section id="method.next_element" class="method"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1730-1732">source</a><h4 class="code-header">fn <a href="#method.next_element" class="fn">next_element</a><T>(&mut self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><T>, Self::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a>><div class="where">where
36 T: <a class="trait" href="../trait.Deserialize.html" title="trait bdk_chain::bitcoin::hashes::serde::Deserialize">Deserialize</a><'de>,</div></h4></section></summary><div class="docblock"><p>This returns <code>Ok(Some(value))</code> for the next value in the sequence, or
37 <code>Ok(None)</code> if there are no more remaining items.</p>
38 <p>This method exists as a convenience for <code>Deserialize</code> implementations.
39 <code>SeqAccess</code> implementations should not override the default behavior.</p>
40 </div></details><details class="toggle method-toggle" open><summary><section id="method.size_hint" class="method"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1739">source</a><h4 class="code-header">fn <a href="#method.size_hint" class="fn">size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>></h4></section></summary><div class="docblock"><p>Returns the number of elements remaining in the sequence, if known.</p>
41 </div></details></div><h2 id="object-safety" class="section-header">Object Safety<a href="#object-safety" class="anchor">§</a></h2><div class="object-safety-info">This trait is <b>not</b> <a href="https://doc.rust-lang.org/nightly/reference/items/traits.html#object-safety">object safe</a>.</div><h2 id="foreign-impls" class="section-header">Implementations on Foreign Types<a href="#foreign-impls" class="anchor">§</a></h2><details class="toggle implementors-toggle"><summary><section id="impl-SeqAccess%3C'de%3E-for-%26mut+A" class="impl"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1744-1746">source</a><a href="#impl-SeqAccess%3C'de%3E-for-%26mut+A" class="anchor">§</a><h3 class="code-header">impl<'de, A> <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de> for <a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut A</a><div class="where">where
42 A: <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de> + ?<a class="trait" href="https://doc.rust-lang.org/nightly/core/marker/trait.Sized.html" title="trait core::marker::Sized">Sized</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Error-1" class="associatedtype trait-impl"><a href="#associatedtype.Error-1" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = <A as <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de>>::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a></h4></section><section id="method.next_element_seed" class="method trait-impl"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1751-1753">source</a><a href="#method.next_element_seed" class="anchor">§</a><h4 class="code-header">fn <a href="#tymethod.next_element_seed" class="fn">next_element_seed</a><T>(
45 ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<T as <a class="trait" href="trait.DeserializeSeed.html" title="trait bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed">DeserializeSeed</a><'de>>::<a class="associatedtype" href="trait.DeserializeSeed.html#associatedtype.Value" title="type bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed::Value">Value</a>>, <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut A</a> as <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de>>::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a>><div class="where">where
46 T: <a class="trait" href="trait.DeserializeSeed.html" title="trait bdk_chain::bitcoin::hashes::serde::de::DeserializeSeed">DeserializeSeed</a><'de>,</div></h4></section><section id="method.next_element-1" class="method trait-impl"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1759-1761">source</a><a href="#method.next_element-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.next_element" class="fn">next_element</a><T>(
48 ) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html" title="enum core::result::Result">Result</a><<a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><T>, <<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.reference.html">&mut A</a> as <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de>>::<a class="associatedtype" href="trait.SeqAccess.html#associatedtype.Error" title="type bdk_chain::bitcoin::hashes::serde::de::SeqAccess::Error">Error</a>><div class="where">where
49 T: <a class="trait" href="../trait.Deserialize.html" title="trait bdk_chain::bitcoin::hashes::serde::Deserialize">Deserialize</a><'de>,</div></h4></section><section id="method.size_hint-1" class="method trait-impl"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/mod.rs.html#1767">source</a><a href="#method.size_hint-1" class="anchor">§</a><h4 class="code-header">fn <a href="#method.size_hint" class="fn">size_hint</a>(&self) -> <a class="enum" href="https://doc.rust-lang.org/nightly/core/option/enum.Option.html" title="enum core::option::Option">Option</a><<a class="primitive" href="https://doc.rust-lang.org/nightly/std/primitive.usize.html">usize</a>></h4></section></div></details><h2 id="implementors" class="section-header">Implementors<a href="#implementors" class="anchor">§</a></h2><div id="implementors-list"><details class="toggle implementors-toggle"><summary><section id="impl-SeqAccess%3C'de%3E-for-MapDeserializer%3C'de,+I,+E%3E" class="impl"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/value.rs.html#1410-1416">source</a><a href="#impl-SeqAccess%3C'de%3E-for-MapDeserializer%3C'de,+I,+E%3E" class="anchor">§</a><h3 class="code-header">impl<'de, I, E> <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de> for <a class="struct" href="value/struct.MapDeserializer.html" title="struct bdk_chain::bitcoin::hashes::serde::de::value::MapDeserializer">MapDeserializer</a><'de, I, E><div class="where">where
50 I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>,
51 <I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a>: Pair,
52 <<I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a> as Pair>::First: <a class="trait" href="trait.IntoDeserializer.html" title="trait bdk_chain::bitcoin::hashes::serde::de::IntoDeserializer">IntoDeserializer</a><'de, E>,
53 <<I as <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a>>::<a class="associatedtype" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html#associatedtype.Item" title="type core::iter::traits::iterator::Iterator::Item">Item</a> as Pair>::Second: <a class="trait" href="trait.IntoDeserializer.html" title="trait bdk_chain::bitcoin::hashes::serde::de::IntoDeserializer">IntoDeserializer</a><'de, E>,
54 E: <a class="trait" href="trait.Error.html" title="trait bdk_chain::bitcoin::hashes::serde::de::Error">Error</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Error-2" class="associatedtype trait-impl"><a href="#associatedtype.Error-2" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = E</h4></section></div></details><details class="toggle implementors-toggle"><summary><section id="impl-SeqAccess%3C'de%3E-for-SeqDeserializer%3CI,+E%3E" class="impl"><a class="src rightside" href="https://docs.rs/serde/1.0.216/src/serde/de/value.rs.html#1081-1085">source</a><a href="#impl-SeqAccess%3C'de%3E-for-SeqDeserializer%3CI,+E%3E" class="anchor">§</a><h3 class="code-header">impl<'de, I, T, E> <a class="trait" href="trait.SeqAccess.html" title="trait bdk_chain::bitcoin::hashes::serde::de::SeqAccess">SeqAccess</a><'de> for <a class="struct" href="value/struct.SeqDeserializer.html" title="struct bdk_chain::bitcoin::hashes::serde::de::value::SeqDeserializer">SeqDeserializer</a><I, E><div class="where">where
55 I: <a class="trait" href="https://doc.rust-lang.org/nightly/core/iter/traits/iterator/trait.Iterator.html" title="trait core::iter::traits::iterator::Iterator">Iterator</a><Item = T>,
56 T: <a class="trait" href="trait.IntoDeserializer.html" title="trait bdk_chain::bitcoin::hashes::serde::de::IntoDeserializer">IntoDeserializer</a><'de, E>,
57 E: <a class="trait" href="trait.Error.html" title="trait bdk_chain::bitcoin::hashes::serde::de::Error">Error</a>,</div></h3></section></summary><div class="impl-items"><section id="associatedtype.Error-3" class="associatedtype trait-impl"><a href="#associatedtype.Error-3" class="anchor">§</a><h4 class="code-header">type <a href="#associatedtype.Error" class="associatedtype">Error</a> = E</h4></section></div></details></div><script src="../../../../../trait.impl/serde/de/trait.SeqAccess.js" data-ignore-extern-crates="serde" async></script></section></div></main></body></html>
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