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="Low-level API for sampling indices"><title>bdk_chain::bitcoin::secp256k1::rand::seq::index - Rust</title><script>if(window.location.protocol!=="file:")document.head.insertAdjacentHTML("beforeend","SourceSerif4-Regular-6b053e98.ttf.woff2,FiraSans-Regular-0fe48ade.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" crossorigin href="../../../../../../static.files/${f}">`).join(""))</script><link rel="stylesheet" href="../../../../../../static.files/normalize-9960930a.css"><link rel="stylesheet" href="../../../../../../static.files/rustdoc-46132b98.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="1.85.0-nightly (6d9f6ae36 2024-12-16)" data-channel="nightly" data-search-js="search-036cda7a.js" data-settings-js="settings-0f613d39.js" ><script src="../../../../../../static.files/storage-59e33391.js"></script><script defer src="../sidebar-items.js"></script><script defer src="../../../../../../static.files/main-5f194d8c.js"></script><noscript><link rel="stylesheet" href="../../../../../../static.files/noscript-893ab5e7.css"></noscript><link rel="alternate icon" type="image/png" href="../../../../../../static.files/favicon-32x32-6580c154.png"><link rel="icon" type="image/svg+xml" href="../../../../../../static.files/favicon-044be391.svg"></head><body class="rustdoc mod"><!--[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_<wbr>chain</a><span class="version">0.21.0</span></h2></div><div class="sidebar-elems"><section id="rustdoc-toc"><h2 class="location"><a href="#">Module index</a></h2><h3><a href="#enums">Module Items</a></h3><ul class="block"><li><a href="#enums" title="Enums">Enums</a></li><li><a href="#functions" title="Functions">Functions</a></li></ul></section><div id="rustdoc-modnav"><h2><a href="../index.html">In bdk_<wbr>chain::<wbr>bitcoin::<wbr>secp256k1::<wbr>rand::<wbr>seq</a></h2></div></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"><span class="rustdoc-breadcrumbs"><a href="../../../../../index.html">bdk_chain</a>::<wbr><a href="../../../../index.html">bitcoin</a>::<wbr><a href="../../../index.html">secp256k1</a>::<wbr><a href="../../index.html">rand</a>::<wbr><a href="../index.html">seq</a></span><h1>Module <span>index</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="https://rust-random.github.io/rand/src/rand/seq/mod.rs.html#30">Source</a> </span></div><details class="toggle top-doc" open><summary class="hideme"><span>Expand description</span></summary><div class="docblock"><p>Low-level API for sampling indices</p>
2 </div></details><h2 id="enums" class="section-header">Enums<a href="#enums" class="anchor">§</a></h2><ul class="item-table"><li><div class="item-name"><a class="enum" href="enum.IndexVec.html" title="enum bdk_chain::bitcoin::secp256k1::rand::seq::index::IndexVec">Index<wbr>Vec</a></div><div class="desc docblock-short">A vector of indices.</div></li><li><div class="item-name"><a class="enum" href="enum.IndexVecIntoIter.html" title="enum bdk_chain::bitcoin::secp256k1::rand::seq::index::IndexVecIntoIter">Index<wbr>VecInto<wbr>Iter</a></div><div class="desc docblock-short">Return type of <code>IndexVec::into_iter</code>.</div></li><li><div class="item-name"><a class="enum" href="enum.IndexVecIter.html" title="enum bdk_chain::bitcoin::secp256k1::rand::seq::index::IndexVecIter">Index<wbr>VecIter</a></div><div class="desc docblock-short">Return type of <code>IndexVec::iter</code>.</div></li></ul><h2 id="functions" class="section-header">Functions<a href="#functions" class="anchor">§</a></h2><ul class="item-table"><li><div class="item-name"><a class="fn" href="fn.sample.html" title="fn bdk_chain::bitcoin::secp256k1::rand::seq::index::sample">sample</a></div><div class="desc docblock-short">Randomly sample exactly <code>amount</code> distinct indices from <code>0..length</code>, and
3 return them in random order (fully shuffled).</div></li><li><div class="item-name"><a class="fn" href="fn.sample_weighted.html" title="fn bdk_chain::bitcoin::secp256k1::rand::seq::index::sample_weighted">sample_<wbr>weighted</a></div><div class="desc docblock-short">Randomly sample exactly <code>amount</code> distinct indices from <code>0..length</code>, and
4 return them in an arbitrary order (there is no guarantee of shuffling or
5 ordering). The weights are to be provided by the input function <code>weights</code>,
6 which will be called once for each index.</div></li></ul></section></div></main></body></html>
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