gojs
Version:
Interactive diagrams, charts, and graphs, such as trees, flowcharts, orgcharts, UML, BPMN, or business diagrams
460 lines (459 loc) • 23.4 kB
HTML
<html class="default no-js">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<title>Iterator | GoJS API</title>
<meta name="description" content="">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="../../assets/css/bootstrap.min.css">
<link rel="stylesheet" href="../assets/css/main.css">
</head>
<body>
<header>
<!-- non-fixed navbar -->
<nav id="non-fixed-nav" class="navbar navbar-inverse navbar-top">
<div class="container-fluid">
<div class="navbar-header">
<div class="navheader-container">
<div class="navheader-collapse" data-toggle="collapse" data-target="#navbar">
<a id="toplogo" class="navbar-brand" href="../../index.html">GoJS</a>
<button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#navbar">
<span class="sr-only">Toggle navigation</span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
</div>
</div>
</div>
<div id="navbar" class="navbar-collapse collapse">
<ul class="nav navbar-nav navbar-right">
<li><a href="../../index.html">Home</a></li>
<li><a href="../../learn/index.html">Learn</a></li>
<li><a href="../../samples/index.html">Samples</a></li>
<li><a href="../../intro/index.html">Intro</a></li>
<li><a href="../../api/index.html" target="api">API</a></li>
<li><a href="https://www.nwoods.com/components/evalform.htm">Register</a></li>
<li><a href="../../download.html">Download</a></li>
<li><a href="https://forum.nwoods.com/c/gojs">Forum</a></li>
<li><a href="https://www.nwoods.com/contact.html" onclick="ga('send','event','Outbound Link','click','contact');">Contact</a></li>
<li class="buy"><a href="https://www.nwoods.com/sales/index.html" onclick="ga('send','event','Outbound Link','click','buy');">Buy</a></li>
<li class="activate"><a href="https://www.nwoods.com/app/activate.aspx?sku=gojs">Activate</a></li>
</ul>
</div><!--/.nav-collapse -->
</div>
</nav>
<div class="tsd-page-header">
<div class="tsd-page-toolbar">
<div class="container-fluid plr15">
<div class="table-wrap">
<div class="table-cell" id="tsd-search" data-index="../assets/js/search.js" data-base="..">
<div class="field">
<label for="tsd-search-field" class="tsd-widget search no-caption">Search</label>
<input id="tsd-search-field" type="text" />
</div>
<ul class="results">
<li class="state loading">Preparing search index...</li>
<li class="state failure">The search index is not available</li>
</ul>
<a href="../index.html" class="title">GoJS API</a>
</div>
<div class="table-cell" id="tsd-widgets">
<div id="tsd-filter">
<a href="#" class="tsd-widget options no-caption" data-toggle="options">Options</a>
<div class="tsd-filter-group">
<div class="tsd-select" id="tsd-filter-visibility">
<span class="tsd-select-label">All</span>
<ul class="tsd-select-list">
<li data-value="public">Public</li>
<li data-value="protected">Public/Protected</li>
<li data-value="private" class="selected">All</li>
</ul>
</div>
</div>
</div>
<a href="#" class="tsd-widget menu no-caption" data-toggle="menu">Menu</a>
</div>
</div>
</div>
</div>
<div class="tsd-page-title">
<div class="container-fluid plr15">
<div class="top-copyright">
<!--<b>GoJS</b>® Diagramming Components<br/>version <br/>version 2.1.18 for TypeScript/HTML<br/>by <a href="https://www.nwoods.com/">Northwoods Software®</a>-->
<b>GoJS</b>® Diagramming Components<br/>version 2.1.18<br/>by <a href="https://www.nwoods.com/">Northwoods Software®</a>
</div>
<div>
<h1>Interface Iterator<T></h1>
</div>
</div>
</div>
</div>
</header>
<div class="container-fluid container-main plr15">
<div class="row">
<div class="col-8 col-content">
<section class="tsd-panel tsd-hierarchy">
<h3>Hierarchy</h3>
<ul class="tsd-hierarchy">
<li>
<a href="Iterable.html" class="tsd-signature-type">Iterable</a><span class="tsd-signature-symbol"><</span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">></span>
<ul class="tsd-hierarchy">
<li>
<span class="target">Iterator</span>
</li>
</ul>
</li>
</ul>
</section>
<section class="tsd-panel tsd-comment">
<div class="tsd-comment tsd-typography">
<p>This interface defines properties and methods for iterating over a collection;
it provides the <a href="Iterator.html#next">next</a> predicate and the <a href="Iterator.html#value">value</a> read-only property.
Some Iterators also provide <code>key</code> property values along with each <code>value</code>.</p>
<p>Typical usage is:</p>
<pre><code class="hljs js"> <span class="hljs-keyword">var</span> it = anIterableCollection.iterator;
<span class="hljs-keyword">while</span> (it.next()) {
<span class="hljs-keyword">var</span> item = it.value;
}</code></pre>
<p>Many iterators will signal an error if <a href="Iterator.html#next">next</a> is called
after the underlying collection has been modified.</p>
<p>To avoid confusion when dealing with <a href="Iterable.html">Iterable</a>s,
iterators implement the <a href="Iterable.html#iterator">Iterable.iterator</a> property
by just returning themselves.</p>
</div>
</section>
<section class="tsd-panel tsd-type-parameters">
<h3>Type parameters</h3>
<ul class="tsd-type-parameters">
<li>
<h4>T</h4>
</li>
</ul>
</section>
<section class="tsd-panel-group tsd-index-group">
<h2>Index</h2>
<section class="tsd-panel tsd-index-panel">
<div class="tsd-index-content">
<section class="tsd-index-section ">
<h3>Properties</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-property tsd-parent-kind-interface"><a href="Iterator.html#count" class="tsd-kind-icon">count</a></li>
<li class="tsd-kind-property tsd-parent-kind-interface"><a href="Iterator.html#iterator" class="tsd-kind-icon">iterator</a></li>
<li class="tsd-kind-property tsd-parent-kind-interface"><a href="Iterator.html#key" class="tsd-kind-icon">key</a></li>
<li class="tsd-kind-property tsd-parent-kind-interface"><a href="Iterator.html#value" class="tsd-kind-icon">value</a></li>
</ul>
</section>
<section class="tsd-index-section ">
<h3>Methods</h3>
<ul class="tsd-index-list">
<li class="tsd-kind-method tsd-parent-kind-interface"><a href="Iterator.html#all" class="tsd-kind-icon">all</a></li>
<li class="tsd-kind-method tsd-parent-kind-interface"><a href="Iterator.html#any" class="tsd-kind-icon">any</a></li>
<li class="tsd-kind-method tsd-parent-kind-interface"><a href="Iterator.html#each" class="tsd-kind-icon">each</a></li>
<li class="tsd-kind-method tsd-parent-kind-interface"><a href="Iterator.html#first" class="tsd-kind-icon">first</a></li>
<li class="tsd-kind-method tsd-parent-kind-interface"><a href="Iterator.html#next" class="tsd-kind-icon">next</a></li>
<li class="tsd-kind-method tsd-parent-kind-interface"><a href="Iterator.html#reset" class="tsd-kind-icon">reset</a></li>
</ul>
</section>
</div>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Properties</h2>
<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-interface">
<a name="count" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
count
<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">number</span> </h3>
<div class="tsd-comment tsd-typography">
<p>This read-only property is the total number of items in the iterated collection.</p>
</div>
</section>
<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-interface">
<a name="iterator" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
iterator
<span class="tsd-signature-symbol">: </span><a href="Iterator.html" class="tsd-signature-type">Iterator</a><span class="tsd-signature-symbol"><</span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">></span> </h3>
<div class="tsd-comment tsd-typography">
<p>Returns itself, which is convenient for code that expects an <a href="Iterable.html">Iterable</a>
instead of an <a href="Iterator.html">Iterator</a>.</p>
</div>
</section>
<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-interface">
<a name="key" class="tsd-anchor"></a>
<h3>
key
<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">any</span> </h3>
<div class="tsd-comment tsd-typography">
<p>Gets the current index to the item in the collection, assuming <a href="Iterator.html#next">next</a> has just returned true.</p>
</div>
</section>
<section class="tsd-panel tsd-member tsd-kind-property tsd-parent-kind-interface">
<a name="value" class="tsd-anchor"></a>
<h3>
value
<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span> </h3>
<div class="tsd-comment tsd-typography">
<p>Gets the current item in the collection, assuming <a href="Iterator.html#next">next</a> has just returned true.</p>
</div>
</section>
</section>
<section class="tsd-panel-group tsd-member-group ">
<h2>Methods</h2>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-interface">
<a name="all" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagVirtual">Virtual</span>
all
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-interface">
<li class="tsd-signature tsd-kind-icon">all<span class="tsd-signature-symbol">(</span>pred<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">x</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>This is true if all invocations of the given predicate on items in the collection are true.</p>
<p>Call the given predicate on each item in the collection.
As soon as a call returns false, this returns false.
Otherwise this returns true.
For an empty collection this returns true.</p>
<p>This automatically <a href="Iterator.html#reset">reset</a>'s itself when it is called.</p>
<dl class="tsd-comment-tags">
<dt>since</dt>
<dd><p>1.4</p>
</dd>
</dl>
</div>
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>pred: <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">x</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></h5>
<div class="tsd-comment tsd-typography">
<p>This function must not have any side-effects.</p>
</div>
<ul class="tsd-parameters">
</ul>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
<p>True if all predicate calls are true; false otherwise.</p>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-interface">
<a name="any" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagVirtual">Virtual</span>
any
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-interface">
<li class="tsd-signature tsd-kind-icon">any<span class="tsd-signature-symbol">(</span>pred<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">x</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>This is true if any invocation of the given predicate on items in the collection is true.</p>
<p>Call the given predicate on each item in the collection.
As soon as a call returns true, this returns true.
Otherwise this returns false.
For an empty collection this returns false.</p>
<p>This automatically <a href="Iterator.html#reset">reset</a>'s itself when it is called.</p>
<dl class="tsd-comment-tags">
<dt>since</dt>
<dd><p>1.4</p>
</dd>
</dl>
</div>
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>pred: <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">x</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></h5>
<div class="tsd-comment tsd-typography">
<p>This function must not have any side-effects.</p>
</div>
<ul class="tsd-parameters">
</ul>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
<p>True if any predicate call is true; false otherwise.</p>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-interface">
<a name="each" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagVirtual">Virtual</span>
each
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-interface">
<li class="tsd-signature tsd-kind-icon">each<span class="tsd-signature-symbol">(</span>func<span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">x</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Call the given function on each item in the collection.</p>
<p>This automatically <a href="Iterator.html#reset">reset</a>'s itself when it is called.</p>
<dl class="tsd-comment-tags">
<dt>since</dt>
<dd><p>1.4</p>
</dd>
</dl>
</div>
<h4 class="tsd-parameters-title">Parameters</h4>
<ul class="tsd-parameters">
<li>
<h5>func: <span class="tsd-signature-type">function</span><span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">x</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></h5>
<div class="tsd-comment tsd-typography">
<p>This function must not modify the collection.</p>
</div>
<ul class="tsd-parameters">
</ul>
</li>
</ul>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
<p>this iterator itself</p>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-interface">
<a name="first" class="tsd-anchor"></a>
<h3>
<span class="tsd-flag ts-flagOverride">Override</span>
first
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-interface">
<li class="tsd-signature tsd-kind-icon">first<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">T</span><span class="tsd-signature-symbol"> | </span><span class="tsd-signature-type">null</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Advance if needed to the first item in the collection and return it, or return null if there is none.</p>
<p>Caution: this returns a <em>key/value pair</em>, not a <em>value</em>, for <a href="Map.html">Map</a> iterators.</p>
<dl class="tsd-comment-tags">
<dt>since</dt>
<dd><p>1.1</p>
</dd>
</dl>
</div>
<h4 class="tsd-returns-title">Returns
<span class="tsd-signature-type">T</span>
<span class="tsd-signature-symbol"> | </span>
<span class="tsd-signature-type">null</span>
</h4>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-interface">
<a name="next" class="tsd-anchor"></a>
<h3>
next
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-interface">
<li class="tsd-signature tsd-kind-icon">next<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">boolean</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Call this method to advance the iterator to the next item in the collection.
This should be called before accessing any <a href="Iterator.html#value">value</a>.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">boolean</span></h4>
<p>whether another item is available; when true the value of <a href="Iterator.html#value">value</a> will be that item.</p>
</li>
</ul>
</section>
<section class="tsd-panel tsd-member tsd-kind-method tsd-parent-kind-interface">
<a name="reset" class="tsd-anchor"></a>
<h3>
reset
</h3>
<ul class="tsd-signatures tsd-kind-method tsd-parent-kind-interface">
<li class="tsd-signature tsd-kind-icon">reset<span class="tsd-signature-symbol">(</span><span class="tsd-signature-symbol">)</span><span class="tsd-signature-symbol">: </span><span class="tsd-signature-type">void</span></li>
</ul>
<ul class="tsd-descriptions">
<li class="tsd-description">
<div class="tsd-comment tsd-typography">
<p>Start this iterator all over again.</p>
</div>
<h4 class="tsd-returns-title">Returns <span class="tsd-signature-type">void</span></h4>
</li>
</ul>
</section>
</section>
</div>
<div class="col-4 col-menu menu-sticky-wrap menu-highlight">
<nav class="tsd-navigation primary">
<ul>
<li class="globals ">
<a href="../index.html"><em>GoJS <wbr>Class <wbr>Index</em></a>
</li>
</ul>
</nav>
<nav class="tsd-navigation secondary menu-sticky">
<ul class="before-current">
</ul>
<ul class="current">
<li class="current tsd-kind-interface tsd-has-type-parameter">
<a href="Iterator.html" class="tsd-kind-icon">Iterator</a>
<ul>
<li class=" tsd-kind-property tsd-parent-kind-interface">
<a href="Iterator.html#count" class="tsd-kind-icon">count</a>
</li>
<li class=" tsd-kind-property tsd-parent-kind-interface">
<a href="Iterator.html#iterator" class="tsd-kind-icon">iterator</a>
</li>
<li class=" tsd-kind-property tsd-parent-kind-interface">
<a href="Iterator.html#key" class="tsd-kind-icon">key</a>
</li>
<li class=" tsd-kind-property tsd-parent-kind-interface">
<a href="Iterator.html#value" class="tsd-kind-icon">value</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-interface">
<a href="Iterator.html#all" class="tsd-kind-icon">all</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-interface">
<a href="Iterator.html#any" class="tsd-kind-icon">any</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-interface">
<a href="Iterator.html#each" class="tsd-kind-icon">each</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-interface">
<a href="Iterator.html#first" class="tsd-kind-icon">first</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-interface">
<a href="Iterator.html#next" class="tsd-kind-icon">next</a>
</li>
<li class=" tsd-kind-method tsd-parent-kind-interface">
<a href="Iterator.html#reset" class="tsd-kind-icon">reset</a>
</li>
</ul>
</li>
</ul>
<ul class="after-current">
</ul>
</nav>
</div>
</div>
</div>
<div class="container-fluid bottom-copyright plr15">
Copyright © 1998-2020 by Northwoods Software Corporation.
</div>
<div class="overlay"></div>
<script src="../assets/js/main.js"></script>
<script src="../../assets/js/api.js"></script>
<script src="../../assets/js/bootstrap.min.js"></script>
<script>if (location.protocol == 'file:') document.write('<script src="../assets/js/search.js"><' + '/script>');</script>
<script>
(function(i,s,o,g,r,a,m){i['GoogleAnalyticsObject']=r;i[r]=i[r]||function(){
(i[r].q=i[r].q||[]).push(arguments)},i[r].l=1*new Date();a=s.createElement(o),
m=s.getElementsByTagName(o)[0];a.async=1;a.src=g;m.parentNode.insertBefore(a,m)
})(window,document,'script','https://www.google-analytics.com/analytics.js','ga');
ga('create', 'UA-1506307-5', 'auto');
ga('send', 'pageview');
</script>
</body>
</html>