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<!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="API docs for the AsciiEncoder class from the dart:convert library, for the Dart programming language."> <title>AsciiEncoder class - dart:convert library - Dart API</title> <link rel="canonical" href="https://api.dart.dev/dart-convert/AsciiEncoder-class.html"> <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" 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class="material-symbols-outlined" role="button" tabindex="0">menu</span> <ol class="breadcrumbs gt-separated dark hidden-xs"> <li><a href="../index.html">Dart</a></li> <li><a href="../dart-convert">dart:convert</a></li> <li class="self-crumb">AsciiEncoder class</li> </ol> <div class="self-name">AsciiEncoder</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="dart-convert/dart-convert-library-sidebar.html" data-below-sidebar="dart-convert/AsciiEncoder-class-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/a8bfb132c5f7b9555d13ea79eaf0eaa77825824d/sdk/lib/convert/ascii.dart#L121"><span class="material-symbols-outlined">description</span></a></div> <h1><span class="kind-class">AsciiEncoder</span> class <a href="https://dart.dev/language/class-modifiers#final" class="feature feature-final" title="This class can neither be extended, implemented, nor mixed in.">final</a> </h1></div> <section class="desc markdown"> <p>Converts strings of only ASCII characters to bytes.</p> <p>Example:</p> <pre class="language-dart"><code class="language-dart">const asciiEncoder = AsciiEncoder(); const sample = 'Dart'; final asciiValues = asciiEncoder.convert(sample); print(asciiValues); // [68, 97, 114, 116] </code></pre> </section> <section> <dl class="dl-horizontal"> <dt>Inheritance</dt> <dd> <ul class="gt-separated dark clazz-relationships"> <li><a href="../dart-core/Object-class.html">Object</a></li> <li><a href="../dart-convert/Converter-class.html">Converter</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/String-class.html">String</a></span>, <span class="type-parameter"><a href="../dart-core/List-class.html">List</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/int-class.html">int</a></span>></span></span>></span></li> <li>AsciiEncoder</li> </ul> </dd> </dl> </section> <section class="summary offset-anchor" id="constructors"> <h2>Constructors</h2> <dl class="constructor-summary-list"> <dt id="AsciiEncoder" class="callable"> <span class="name"><a href="../dart-convert/AsciiEncoder/AsciiEncoder.html">AsciiEncoder</a></span><span class="signature">()</span> </dt> <dd> <div class="constructor-modifier features">const</div> </dd> </dl> </section> <section class="summary offset-anchor inherited" id="instance-properties"> <h2>Properties</h2> <dl class="properties"> <dt id="hashCode" class="property inherited"> <span class="name"><a href="../dart-core/Object/hashCode.html">hashCode</a></span> <span class="signature">→ <a href="../dart-core/int-class.html">int</a></span> </dt> <dd class="inherited"> The hash code for this object. <div class="features"><span class="feature">no setter</span><span class="feature">inherited</span></div> </dd> <dt id="runtimeType" class="property inherited"> <span class="name"><a href="../dart-core/Object/runtimeType.html">runtimeType</a></span> <span class="signature">→ <a href="../dart-core/Type-class.html">Type</a></span> </dt> <dd class="inherited"> A representation of the runtime type of the object. <div class="features"><span class="feature">no setter</span><span class="feature">inherited</span></div> </dd> </dl> </section> <section class="summary offset-anchor inherited" id="instance-methods"> <h2>Methods</h2> <dl class="callables"> <dt id="bind" class="callable inherited"> <span class="name"><a href="../dart-convert/AsciiEncoder/bind.html">bind</a></span><span class="signature">(<wbr><span class="parameter" id="bind-param-stream"><span class="type-annotation"><a href="../dart-async/Stream-class.html">Stream</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/String-class.html">String</a></span>></span></span> <span class="parameter-name">stream</span></span>) <span class="returntype parameter">→ <a href="../dart-async/Stream-class.html">Stream</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/List-class.html">List</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/int-class.html">int</a></span>></span></span>></span></span> </span> </dt> <dd class="inherited"> Transforms the provided <code>stream</code>. <div class="features"><span class="feature">inherited</span></div> </dd> <dt id="cast" class="callable inherited"> <span class="name"><a href="../dart-convert/Converter/cast.html">cast</a></span><span class="signature"><<wbr><span class="type-parameter">RS</span>, <span class="type-parameter">RT</span>></span><span class="signature">(<wbr>) <span class="returntype parameter">→ <a href="../dart-convert/Converter-class.html">Converter</a><span class="signature"><<wbr><span class="type-parameter">RS</span>, <span class="type-parameter">RT</span>></span></span> </span> </dt> <dd class="inherited"> Provides a <code>Converter<RS, RT></code> view of this stream transformer. <div class="features"><span class="feature">inherited</span></div> </dd> <dt id="convert" class="callable inherited"> <span class="name"><a href="../dart-convert/AsciiEncoder/convert.html">convert</a></span><span class="signature">(<wbr><span class="parameter" id="convert-param-string"><span class="type-annotation"><a href="../dart-core/String-class.html">String</a></span> <span class="parameter-name">string</span>, [</span><span class="parameter" id="convert-param-start"><span class="type-annotation"><a href="../dart-core/int-class.html">int</a></span> <span class="parameter-name">start</span> = <span class="default-value">0</span>, </span><span class="parameter" id="convert-param-end"><span class="type-annotation"><a href="../dart-core/int-class.html">int</a>?</span> <span class="parameter-name">end</span></span>]) <span class="returntype parameter">→ <a href="../dart-typed_data/Uint8List-class.html">Uint8List</a></span> </span> </dt> <dd class="inherited"> Converts the <a href="../dart-core/String-class.html">String</a> into a list of its code units. <div class="features"><span class="feature">inherited</span></div> </dd> <dt id="fuse" class="callable inherited"> <span class="name"><a href="../dart-convert/Converter/fuse.html">fuse</a></span><span class="signature"><<wbr><span class="type-parameter">TT</span>></span><span class="signature">(<wbr><span class="parameter" id="fuse-param-other"><span class="type-annotation"><a href="../dart-convert/Converter-class.html">Converter</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/List-class.html">List</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/int-class.html">int</a></span>></span></span>, <span class="type-parameter">TT</span>></span></span> <span class="parameter-name">other</span></span>) <span class="returntype parameter">→ <a href="../dart-convert/Converter-class.html">Converter</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/String-class.html">String</a></span>, <span class="type-parameter">TT</span>></span></span> </span> </dt> <dd class="inherited"> Fuses <code>this</code> with <code>other</code>. <div class="features"><span class="feature">inherited</span></div> </dd> <dt id="noSuchMethod" class="callable inherited"> <span class="name"><a href="../dart-core/Object/noSuchMethod.html">noSuchMethod</a></span><span class="signature">(<wbr><span class="parameter" id="noSuchMethod-param-invocation"><span class="type-annotation"><a href="../dart-core/Invocation-class.html">Invocation</a></span> <span class="parameter-name">invocation</span></span>) <span class="returntype parameter">→ dynamic</span> </span> </dt> <dd class="inherited"> Invoked when a nonexistent method or property is accessed. <div class="features"><span class="feature">inherited</span></div> </dd> <dt id="startChunkedConversion" class="callable inherited"> <span class="name"><a href="../dart-convert/AsciiEncoder/startChunkedConversion.html">startChunkedConversion</a></span><span class="signature">(<wbr><span class="parameter" id="startChunkedConversion-param-sink"><span class="type-annotation"><a href="../dart-core/Sink-class.html">Sink</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/List-class.html">List</a><span class="signature"><<wbr><span class="type-parameter"><a href="../dart-core/int-class.html">int</a></span>></span></span>></span></span> <span class="parameter-name">sink</span></span>) <span class="returntype parameter">→ <a href="../dart-convert/StringConversionSink-class.html">StringConversionSink</a></span> </span> </dt> <dd class="inherited"> Starts a chunked conversion. <div class="features"><span class="feature">inherited</span></div> </dd> <dt id="toString" class="callable inherited"> <span class="name"><a href="../dart-core/Object/toString.html">toString</a></span><span class="signature">(<wbr>) <span class="returntype parameter">→ <a href="../dart-core/String-class.html">String</a></span> </span> </dt> <dd class="inherited"> A string representation of this object. <div class="features"><span class="feature">inherited</span></div> </dd> </dl> </section> <section class="summary offset-anchor inherited" id="operators"> <h2>Operators</h2> <dl class="callables"> <dt id="operator ==" class="callable inherited"> <span class="name"><a href="../dart-core/Object/operator_equals.html">operator ==</a></span><span class="signature">(<wbr><span class="parameter" id="==-param-other"><span class="type-annotation"><a href="../dart-core/Object-class.html">Object</a></span> <span class="parameter-name">other</span></span>) <span class="returntype parameter">→ <a href="../dart-core/bool-class.html">bool</a></span> </span> </dt> <dd class="inherited"> The equality operator. <div class="features"><span class="feature">inherited</span></div> </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><a 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