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<aid="settings-menu"href="../../settings.html"><imgsrc="../../wheel.svg"width="18"alt="Change settings"></a></div></form></nav><sectionid="main"class="content"><h1class='fqn'><spanclass='out-of-band'><spanid='render-detail'><aid="toggle-all-docs"href="javascript:void(0)"title="collapse all docs">[<spanclass='inner'>−</span>]</a></span><aclass='srclink'href='../../src/abstutil/serde.rs.html#46-51'title='goto source code'>[src]</a></span><spanclass='in-band'>Function <ahref='../index.html'>abstutil</a>::<wbr><ahref='index.html'>serde</a>::<wbr><aclass="fn"href=''>serialize_btreemap</a></span></h1><preclass='rust fn'>pub fn serialize_btreemap<S: <aclass="trait"href="https://docs.rs/serde/1.0.117/serde/ser/trait.Serializer.html"title="trait serde::ser::Serializer">Serializer</a>, K: <aclass="trait"href="https://docs.rs/serde/1.0.117/serde/ser/trait.Serialize.html"title="trait serde::ser::Serialize">Serialize</a>, V: <aclass="trait"href="https://docs.rs/serde/1.0.117/serde/ser/trait.Serialize.html"title="trait serde::ser::Serialize">Serialize</a>>(<br> map: &<aclass="struct"href="https://doc.rust-lang.org/nightly/alloc/collections/btree/map/struct.BTreeMap.html"title="struct alloc::collections::btree::map::BTreeMap">BTreeMap</a><K, V>, <br> s: S<br>) -><aclass="enum"href="https://doc.rust-lang.org/nightly/core/result/enum.Result.html"title="enum core::result::Result">Result</a><S::<aclass="type"href="https://docs.rs/serde/1.0.117/serde/ser/trait.Serializer.html#associatedtype.Ok"title="type serde::ser::Serializer::Ok">Ok</a>, S::<aclass="type"href="https://docs.rs/serde/1.0.117/serde/ser/trait.Serializer.html#associatedtype.Error"title="type serde::ser::Serializer::Error">Error</a>></pre><divclass='docblock'><p>Serializes a BTreeMap as a list of tuples. Necessary when the keys are structs; see
