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< main > < div class = "width-limiter" > < nav class = "sub" > < form class = "search-form" > < span > < / span > < div id = "sidebar-button" tabindex = "-1" > < a href = "../../serde/all.html" title = "show sidebar" > < / a > < / div > < input class = "search-input" name = "search" aria-label = "Run search in the documentation" autocomplete = "off" spellcheck = "false" placeholder = "Click or press ‘ S’ to search, ‘ ?’ for more options…" type = "search" > < div id = "help-button" tabindex = "-1" > < a href = "../../help.html" title = "help" > ?< / a > < / div > < div id = "settings-menu" tabindex = "-1" > < a href = "../../settings.html" title = "settings" > < img width = "22" height = "22" alt = "Change settings" src = "../../static.files/wheel-7b819b6101059cd0.svg" > < / a > < / div > < / form > < / nav > < section id = "main-content" class = "content" > < div class = "main-heading" > < h1 > Trait < a href = "../index.html" > serde< / a > ::< wbr > < a href = "index.html" > ser< / a > ::< wbr > < a class = "trait" href = "#" > SerializeSeq< / a > < button id = "copy-path" title = "Copy item path to clipboard" > < img src = "../../static.files/clipboard-7571035ce49a181d.svg" width = "19" height = "18" alt = "Copy item path" > < / button > < / h1 > < span class = "out-of-band" > < a class = "src" href = "../../src/serde/ser/mod.rs.html#1491-1505" > source< / a > · < button id = "toggle-all-docs" title = "collapse all docs" > [< span > − < / span > ]< / button > < / span > < / div > < pre class = "rust item-decl" > < code > pub trait SerializeSeq {
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type < a href = "#associatedtype.Ok" class = "associatedtype" > Ok< / a > ;
type < a href = "#associatedtype.Error" class = "associatedtype" > Error< / a > : < a class = "trait" href = "trait.Error.html" title = "trait serde::ser::Error" > Error< / a > ;
// Required methods
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fn < a href = "#tymethod.serialize_element" class = "fn" > serialize_element< / a > < T> (& mut self, value: < a class = "primitive" href = "https://doc.rust-lang.org/1.78.0/std/primitive.reference.html" > & T< / a > ) -> < a class = "enum" href = "https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title = "enum core::result::Result" > Result< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.78.0/std/primitive.unit.html" > ()< / a > , Self::< a class = "associatedtype" href = "trait.SerializeSeq.html#associatedtype.Error" title = "type serde::ser::SerializeSeq::Error" > Error< / a > >
< span class = "where" > where T: ?< a class = "trait" href = "https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title = "trait core::marker::Sized" > Sized< / a > + < a class = "trait" href = "../trait.Serialize.html" title = "trait serde::Serialize" > Serialize< / a > < / span > ;
< span class = "item-spacer" > < / span > fn < a href = "#tymethod.end" class = "fn" > end< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title = "enum core::result::Result" > Result< / a > < Self::< a class = "associatedtype" href = "trait.SerializeSeq.html#associatedtype.Ok" title = "type serde::ser::SerializeSeq::Ok" > Ok< / a > , Self::< a class = "associatedtype" href = "trait.SerializeSeq.html#associatedtype.Error" title = "type serde::ser::SerializeSeq::Error" > Error< / a > > ;
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}< / code > < / pre > < details class = "toggle top-doc" open > < summary class = "hideme" > < span > Expand description< / span > < / summary > < div class = "docblock" > < p > Returned from < code > Serializer::serialize_seq< / code > .< / p >
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< h2 id = "example-use" > < a class = "doc-anchor" href = "#example-use" > §< / a > Example use< / h2 >
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< div class = "example-wrap edition" > < a href = "#" class = "tooltip" title = "This example runs with edition 2021" > ⓘ< / a > < pre class = "rust rust-example-rendered" > < code > < span class = "kw" > use < / span > serde::ser::{Serialize, SerializeSeq, Serializer};
< span class = "kw" > impl< / span > < T> Serialize < span class = "kw" > for < / span > Vec< T>
< span class = "kw" > where
< / span > T: Serialize,
{
< span class = "kw" > fn < / span > serialize< S> (< span class = "kw-2" > & < / span > < span class = "self" > self< / span > , serializer: S) -> < span class = "prelude-ty" > Result< / span > < S::Ok, S::Error>
< span class = "kw" > where
< / span > S: Serializer,
{
< span class = "kw" > let < / span > < span class = "kw-2" > mut < / span > seq = serializer.serialize_seq(< span class = "prelude-val" > Some< / span > (< span class = "self" > self< / span > .len()))< span class = "question-mark" > ?< / span > ;
< span class = "kw" > for < / span > element < span class = "kw" > in < / span > < span class = "self" > self < / span > {
seq.serialize_element(element)< span class = "question-mark" > ?< / span > ;
}
seq.end()
}
}< / code > < / pre > < / div >
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< h2 id = "example-implementation" > < a class = "doc-anchor" href = "#example-implementation" > §< / a > Example implementation< / h2 >
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< p > The < a href = "https://serde.rs/data-format.html" > example data format< / a > presented on the website demonstrates an
implementation of < code > SerializeSeq< / code > for a basic JSON data format.< / p >
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< / 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.Ok" class = "method" > < a class = "src rightside" href = "../../src/serde/ser/mod.rs.html#1493" > source< / a > < h4 class = "code-header" > type < a href = "#associatedtype.Ok" class = "associatedtype" > Ok< / a > < / h4 > < / section > < / summary > < div class = "docblock" > < p > Must match the < code > Ok< / code > type of our < code > Serializer< / code > .< / p >
< / div > < / details > < details class = "toggle" open > < summary > < section id = "associatedtype.Error" class = "method" > < a class = "src rightside" href = "../../src/serde/ser/mod.rs.html#1496" > source< / a > < h4 class = "code-header" > type < a href = "#associatedtype.Error" class = "associatedtype" > Error< / a > : < a class = "trait" href = "trait.Error.html" title = "trait serde::ser::Error" > Error< / a > < / h4 > < / section > < / summary > < div class = "docblock" > < p > Must match the < code > Error< / code > type of our < code > Serializer< / code > .< / p >
< / 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.serialize_element" class = "method" > < a class = "src rightside" href = "../../src/serde/ser/mod.rs.html#1499-1501" > source< / a > < h4 class = "code-header" > fn < a href = "#tymethod.serialize_element" class = "fn" > serialize_element< / a > < T> (& mut self, value: < a class = "primitive" href = "https://doc.rust-lang.org/1.78.0/std/primitive.reference.html" > & T< / a > ) -> < a class = "enum" href = "https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title = "enum core::result::Result" > Result< / a > < < a class = "primitive" href = "https://doc.rust-lang.org/1.78.0/std/primitive.unit.html" > ()< / a > , Self::< a class = "associatedtype" href = "trait.SerializeSeq.html#associatedtype.Error" title = "type serde::ser::SerializeSeq::Error" > Error< / a > > < div class = "where" > where
T: ?< a class = "trait" href = "https://doc.rust-lang.org/1.78.0/core/marker/trait.Sized.html" title = "trait core::marker::Sized" > Sized< / a > + < a class = "trait" href = "../trait.Serialize.html" title = "trait serde::Serialize" > Serialize< / a > ,< / div > < / h4 > < / section > < / summary > < div class = "docblock" > < p > Serialize a sequence element.< / p >
< / div > < / details > < details class = "toggle method-toggle" open > < summary > < section id = "tymethod.end" class = "method" > < a class = "src rightside" href = "../../src/serde/ser/mod.rs.html#1504" > source< / a > < h4 class = "code-header" > fn < a href = "#tymethod.end" class = "fn" > end< / a > (self) -> < a class = "enum" href = "https://doc.rust-lang.org/1.78.0/core/result/enum.Result.html" title = "enum core::result::Result" > Result< / a > < Self::< a class = "associatedtype" href = "trait.SerializeSeq.html#associatedtype.Ok" title = "type serde::ser::SerializeSeq::Ok" > Ok< / a > , Self::< a class = "associatedtype" href = "trait.SerializeSeq.html#associatedtype.Error" title = "type serde::ser::SerializeSeq::Error" > Error< / a > > < / h4 > < / section > < / summary > < div class = "docblock" > < p > Finish serializing a sequence.< / p >
< / 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/1.78.0/reference/items/traits.html#object-safety" > object safe< / a > .< / div > < 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-SerializeSeq-for-Impossible%3COk,+Error%3E" class = "impl" > < a class = "src rightside" href = "../../src/serde/ser/impossible.rs.html#68-86" > source< / a > < a href = "#impl-SerializeSeq-for-Impossible%3COk,+Error%3E" class = "anchor" > §< / a > < h3 class = "code-header" > impl< Ok, Error> < a class = "trait" href = "trait.SerializeSeq.html" title = "trait serde::ser::SerializeSeq" > SerializeSeq< / a > for < a class = "struct" href = "struct.Impossible.html" title = "struct serde::ser::Impossible" > Impossible< / a > < Ok, Error> < div class = "where" > where
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Error: < a class = "trait" href = "trait.Error.html" title = "trait serde::ser::Error" > Error< / a > ,< / div > < / h3 > < / section > < / summary > < div class = "impl-items" > < section id = "associatedtype.Ok-1" class = "associatedtype trait-impl" > < a href = "#associatedtype.Ok-1" class = "anchor" > §< / a > < h4 class = "code-header" > type < a href = "#associatedtype.Ok" class = "associatedtype" > Ok< / a > = Ok< / h4 > < / section > < 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 > = Error< / h4 > < / section > < / div > < / details > < / div > < script src = "../../trait.impl/serde/ser/trait.SerializeSeq.js" async > < / script > < / section > < / div > < / main > < / body > < / html >