dart:typed_data library

<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, height=device-height, initial-scale=1, user-scalable=no"> <meta name="description" content="dart:typed_data library API docs, for the Dart programming language."> <title>dart:typed_data library - Dart API</title> <link rel="canonical" href="https://api.dart.dev/dart-typed_data"> <link rel="preconnect" href="https://fonts.gstatic.com"> <link href="https://fonts.googleapis.com/css2?family=Roboto+Mono:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap" rel="stylesheet"> <link href="https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0" rel="stylesheet"> <link rel="stylesheet" href="../static-assets/github.css?v1"> <link rel="stylesheet" href="../static-assets/styles.css?v1"> <link rel="icon" href="../static-assets/favicon.png?v1">  <script async 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tabindex="0">menu</span> <ol class="breadcrumbs gt-separated dark hidden-xs"> <li><a href="../index.html">Dart</a></li> <li class="self-crumb">dart:typed_data</li> </ol> <div class="self-name">dart:typed_data</div> <form class="search navbar-right" role="search"> <input type="text" id="search-box" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search..."> </form> <div class="toggle" id="theme-button" title="Toggle brightness"> <label for="theme"> <input type="checkbox" id="theme" value="light-theme"> <span id="dark-theme-button" class="material-symbols-outlined"> dark_mode </span> <span id="light-theme-button" class="material-symbols-outlined"> light_mode </span> </label> </div> </header> <main> <div id="dartdoc-main-content" class="main-content" data-above-sidebar="" data-below-sidebar="dart-typed_data/dart-typed_data-library-sidebar.html"> <div> <div id="external-links" class="btn-group"><a title="View source code" class="source-link" href="https://github.com/dart-lang/sdk/blob/9594995093f642957b780603c6435d9e7a61b923/sdk/lib/typed_data/typed_data.dart#L14"><span class="material-symbols-outlined">description</span></a></div> <h1> <span class="kind-library">dart:typed_data</span> library </h1> </div> <section class="desc markdown"> <p>Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types.</p> <p>To use this library in your code:</p> <pre class="language-dart"><code class="language-dart">import 'dart:typed_data'; </code></pre> </section> <section class="summary offset-anchor" id="classes"> <h2>Classes</h2> <dl> <dt id="ByteBuffer"> <span class="name "><a href="../dart-typed_data/ByteBuffer-class.html">ByteBuffer</a></span> </dt> <dd> A sequence of bytes underlying a typed data object. </dd> <dt id="ByteData"> <span class="name "><a href="../dart-typed_data/ByteData-class.html">ByteData</a></span> </dt> <dd> A fixed-length, random-access sequence of bytes that also provides random and unaligned access to the fixed-width integers and floating point numbers represented by those bytes. </dd> <dt id="BytesBuilder"> <span class="name "><a href="../dart-typed_data/BytesBuilder-class.html">BytesBuilder</a></span> </dt> <dd> Builds a list of bytes, allowing bytes and lists of bytes to be added at the end. </dd> <dt id="Endian"> <span class="name "><a href="../dart-typed_data/Endian-class.html">Endian</a></span> </dt> <dd> Endianness of number representation. </dd> <dt id="Float32List"> <span class="name "><a href="../dart-typed_data/Float32List-class.html">Float32List</a></span> </dt> <dd> A fixed-length list of IEEE 754 single-precision binary floating-point numbers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Float32x4"> <span class="name "><a href="../dart-typed_data/Float32x4-class.html">Float32x4</a></span> </dt> <dd> Float32x4 immutable value type and operations. </dd> <dt id="Float32x4List"> <span class="name "><a href="../dart-typed_data/Float32x4List-class.html">Float32x4List</a></span> </dt> <dd> A fixed-length list of <a href="../dart-typed_data/Float32x4-class.html">Float32x4</a> numbers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Float64List"> <span class="name "><a href="../dart-typed_data/Float64List-class.html">Float64List</a></span> </dt> <dd> A fixed-length list of IEEE 754 double-precision binary floating-point numbers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Float64x2"> <span class="name "><a href="../dart-typed_data/Float64x2-class.html">Float64x2</a></span> </dt> <dd> Float64x2 immutable value type and operations. </dd> <dt id="Float64x2List"> <span class="name "><a href="../dart-typed_data/Float64x2List-class.html">Float64x2List</a></span> </dt> <dd> A fixed-length list of <a href="../dart-typed_data/Float64x2-class.html">Float64x2</a> numbers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Int16List"> <span class="name "><a href="../dart-typed_data/Int16List-class.html">Int16List</a></span> </dt> <dd> A fixed-length list of 16-bit signed integers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Int32List"> <span class="name "><a href="../dart-typed_data/Int32List-class.html">Int32List</a></span> </dt> <dd> A fixed-length list of 32-bit signed integers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Int32x4"> <span class="name "><a href="../dart-typed_data/Int32x4-class.html">Int32x4</a></span> </dt> <dd> Int32x4 and operations. </dd> <dt id="Int32x4List"> <span class="name "><a href="../dart-typed_data/Int32x4List-class.html">Int32x4List</a></span> </dt> <dd> A fixed-length list of <a href="../dart-typed_data/Int32x4-class.html">Int32x4</a> numbers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Int64List"> <span class="name "><a href="../dart-typed_data/Int64List-class.html">Int64List</a></span> </dt> <dd> A fixed-length list of 64-bit signed integers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Int8List"> <span class="name "><a href="../dart-typed_data/Int8List-class.html">Int8List</a></span> </dt> <dd> A fixed-length list of 8-bit signed integers. </dd> <dt id="TypedData"> <span class="name "><a href="../dart-typed_data/TypedData-class.html">TypedData</a></span> </dt> <dd> A typed view of a sequence of bytes. </dd> <dt id="TypedDataList"> <span class="name "><a href="../dart-typed_data/TypedDataList-class.html">TypedDataList</a><span class="signature"><<wbr><span class="type-parameter">E</span>></span></span> </dt> <dd> A <a href="../dart-typed_data/TypedData-class.html">TypedData</a> fixed-length <a href="../dart-core/List-class.html">List</a>-view on the bytes of <a href="../dart-typed_data/TypedData/buffer.html">buffer</a>. </dd> <dt id="Uint16List"> <span class="name "><a href="../dart-typed_data/Uint16List-class.html">Uint16List</a></span> </dt> <dd> A fixed-length list of 16-bit unsigned integers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Uint32List"> <span class="name "><a href="../dart-typed_data/Uint32List-class.html">Uint32List</a></span> </dt> <dd> A fixed-length list of 32-bit unsigned integers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Uint64List"> <span class="name "><a href="../dart-typed_data/Uint64List-class.html">Uint64List</a></span> </dt> <dd> A fixed-length list of 64-bit unsigned integers that is viewable as a <a href="../dart-typed_data/TypedData-class.html">TypedData</a>. </dd> <dt id="Uint8ClampedList"> <span class="name "><a href="../dart-typed_data/Uint8ClampedList-class.html">Uint8ClampedList</a></span> </dt> <dd> A fixed-length list of 8-bit unsigned integers. </dd> <dt id="Uint8List"> <span class="name "><a href="../dart-typed_data/Uint8List-class.html">Uint8List</a></span> </dt> <dd> A fixed-length list of 8-bit unsigned integers. </dd> </dl> </section> </div>  <div id="dartdoc-sidebar-left" class="sidebar sidebar-offcanvas-left">  <header id="header-search-sidebar" class="hidden-l"> <form class="search-sidebar" role="search"> <input type="text" id="search-sidebar" autocomplete="off" disabled class="form-control typeahead" placeholder="Loading search..."> </form> </header> <ol class="breadcrumbs gt-separated dark hidden-l" id="sidebar-nav"> <li><a href="../index.html">Dart</a></li> <li class="self-crumb">dart:typed_data</li> </ol> <h5><span class="package-name">Dart</span> <span 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dart:typed_data library - Dart API