markgojs

<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>GoJS® Map Class</title> <script src="../../assets/js/jquery.min.js"></script> <script src="../../assets/js/bootstrap.min.js"></script> <script src="../../assets/js/highlight.js"></script> <script src="../../assets/js/api.js"></script> <script src="../../assets/js/fuse.min.js"></script> <link href="../../assets/css/bootstrap.min.css" rel="stylesheet" >  <link href="../../assets/css/main.css" rel="stylesheet" type="text/css"/> <link href="../../assets/css/api.css" rel="stylesheet" type="text/css"/>  <link rel="stylesheet" href="../../assets/css/highlight.css" type="text/css" media="all" /> </head> <body>  <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">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> </div> </nav> <div class="container-fluid">  <div id="navindex" class="col-md-2">   <div class="sidebar-nav"> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#DiagramNavbar"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#DiagramNavbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <span class="navbar-brand">Diagram Classes</span> </div> </div> <div id="DiagramNavbar" class="navbar-collapse collapse sidebar-navbar-collapse"> <ul class="classList nav navbar-nav"> <li><a href="../symbols/Adornment.html" class="linkConstructor">Adornment</a></li> <li><a href="../symbols/AnimationManager.html" class="linkConstructor">AnimationManager</a></li> <li><a href="../symbols/CommandHandler.html" class="linkConstructor">CommandHandler</a></li> <li><a href="../symbols/Diagram.html" class="linkConstructor">Diagram</a></li> <li><a href="../symbols/DiagramEvent.html" class="linkConstructor">DiagramEvent</a></li> <li><a href="../symbols/GraphObject.html" class="linkConstructor">GraphObject</a></li> <li><a href="../symbols/Group.html" class="linkConstructor">Group</a></li> <li><a href="../symbols/InputEvent.html" class="linkConstructor">InputEvent</a></li> <li><a href="../symbols/Layer.html" class="linkConstructor">Layer</a></li> <li><a href="../symbols/Link.html" class="linkConstructor">Link</a></li> <li><a href="../symbols/Node.html" class="linkConstructor">Node</a></li> <li><a href="../symbols/Overview.html" class="linkConstructor">Overview</a></li> <li><a href="../symbols/Palette.html" class="linkConstructor">Palette</a></li> <li><a href="../symbols/Panel.html" class="linkConstructor">Panel</a></li> <li><a href="../symbols/Part.html" class="linkConstructor">Part</a></li> <li><a href="../symbols/Picture.html" class="linkConstructor">Picture</a></li> <li><a href="../symbols/Placeholder.html" class="linkConstructor">Placeholder</a></li> <li><a href="../symbols/RowColumnDefinition.html" class="linkConstructor">RowColumnDefinition</a></li> <li><a href="../symbols/Shape.html" class="linkConstructor">Shape</a></li> <li><a href="../symbols/TextBlock.html" class="linkConstructor">TextBlock</a></li> </ul> </div> </div> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#GeometryNavbar"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#GeometryNavbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <span class="navbar-brand">Geometry Classes</span> </div> </div> <div id="GeometryNavbar" class="navbar-collapse collapse sidebar-navbar-collapse"> <ul class="classList nav navbar-nav"> <li><a href="../symbols/Brush.html" class="linkConstructor">Brush</a></li> <li><a href="../symbols/Geometry.html" class="linkConstructor">Geometry</a></li> <li><a href="../symbols/Margin.html" class="linkConstructor">Margin</a></li> <li><a href="../symbols/PathFigure.html" class="linkConstructor">PathFigure</a></li> <li><a href="../symbols/PathSegment.html" class="linkConstructor">PathSegment</a></li> <li><a href="../symbols/Point.html" class="linkConstructor">Point</a></li> <li><a href="../symbols/Rect.html" class="linkConstructor">Rect</a></li> <li><a href="../symbols/Size.html" class="linkConstructor">Size</a></li> <li><a href="../symbols/Spot.html" class="linkConstructor">Spot</a></li> </ul> </div> </div> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#ModelNavbar"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#ModelNavbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <span class="navbar-brand">Model Classes</span> </div> </div> <div id="ModelNavbar" class="navbar-collapse collapse sidebar-navbar-collapse"> <ul class="classList nav navbar-nav"> <li><a href="../symbols/Binding.html" class="linkConstructor">Binding</a></li> <li><a href="../symbols/ChangedEvent.html" class="linkConstructor">ChangedEvent</a></li> <li><a href="../symbols/GraphLinksModel.html" class="linkConstructor">GraphLinksModel</a></li> <li><a href="../symbols/Model.html" class="linkConstructor">Model</a></li> <li><a href="../symbols/Transaction.html" class="linkConstructor">Transaction</a></li> <li><a href="../symbols/TreeModel.html" class="linkConstructor">TreeModel</a></li> <li><a href="../symbols/UndoManager.html" class="linkConstructor">UndoManager</a></li> </ul> </div> </div> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#LayoutNavbar"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#LayoutNavbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <span class="navbar-brand">Layout Classes</span> </div> </div> <div id="LayoutNavbar" class="navbar-collapse collapse sidebar-navbar-collapse"> <ul class="classList nav navbar-nav"> <li><a href="../symbols/CircularLayout.html" class="linkConstructor">CircularLayout</a></li> <li><a href="../symbols/ForceDirectedLayout.html" class="linkConstructor">ForceDirectedLayout</a></li> <li><a href="../symbols/GridLayout.html" class="linkConstructor">GridLayout</a></li> <li><a href="../symbols/LayeredDigraphLayout.html" class="linkConstructor">LayeredDigraphLayout</a></li> <li><a href="../symbols/Layout.html" class="linkConstructor">Layout</a></li> <li><a href="../symbols/LayoutNetwork.html" class="linkConstructor">LayoutNetwork</a></li> <li><a href="../symbols/TreeLayout.html" class="linkConstructor">TreeLayout</a></li> </ul> </div> </div> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#ToolNavbar"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#ToolNavbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <span class="navbar-brand">Tool Classes</span> </div> </div> <div id="ToolNavbar" class="navbar-collapse collapse sidebar-navbar-collapse"> <ul class="classList nav navbar-nav"> <li><a href="../symbols/ActionTool.html" class="linkConstructor">ActionTool</a></li> <li><a href="../symbols/ClickCreatingTool.html" class="linkConstructor">ClickCreatingTool</a></li> <li><a href="../symbols/ClickSelectingTool.html" class="linkConstructor">ClickSelectingTool</a></li> <li><a href="../symbols/ContextMenuTool.html" class="linkConstructor">ContextMenuTool</a></li> <li><a href="../symbols/DraggingTool.html" class="linkConstructor">DraggingTool</a></li> <li><a href="../symbols/DragSelectingTool.html" class="linkConstructor">DragSelectingTool</a></li> <li><a href="../symbols/HTMLInfo.html" class="linkConstructor">HTMLInfo</a></li> <li><a href="../symbols/LinkingBaseTool.html" class="linkConstructor">LinkingBaseTool</a></li> <li><a href="../symbols/LinkingTool.html" class="linkConstructor">LinkingTool</a></li> <li><a href="../symbols/LinkReshapingTool.html" class="linkConstructor">LinkReshapingTool</a></li> <li><a href="../symbols/PanningTool.html" class="linkConstructor">PanningTool</a></li> <li><a href="../symbols/RelinkingTool.html" class="linkConstructor">RelinkingTool</a></li> <li><a href="../symbols/ResizingTool.html" class="linkConstructor">ResizingTool</a></li> <li><a href="../symbols/RotatingTool.html" class="linkConstructor">RotatingTool</a></li> <li><a href="../symbols/TextEditingTool.html" class="linkConstructor">TextEditingTool</a></li> <li><a href="../symbols/Tool.html" class="linkConstructor">Tool</a></li> <li><a href="../symbols/ToolManager.html" class="linkConstructor">ToolManager</a></li> </ul> </div> </div> <div class="navbar navbar-default" role="navigation"> <div class="navbar-header"> <div class="navheader-container"> <div class="navheader-collapse" data-toggle="collapse" data-target="#CollectionNavbar"> <button type="button" class="navbar-toggle" data-toggle="collapse" data-target="#CollectionNavbar"> <span class="sr-only">Toggle navigation</span> <span class="icon-bar"></span> <span class="icon-bar"></span> <span class="icon-bar"></span> </button> </div> <span class="navbar-brand">Collection Classes</span> </div> </div> <div id="CollectionNavbar" class="navbar-collapse collapse sidebar-navbar-collapse"> <ul class="classList nav navbar-nav"> <li><a href="../symbols/Iterable.html" class="linkConstructor">Iterable</a></li> <li><a href="../symbols/Iterator.html" class="linkConstructor">Iterator</a></li> <li><a href="../symbols/List.html" class="linkConstructor">List</a></li> <li><a href="../symbols/Map.html" class="linkConstructor">Map</a></li> <li><a href="../symbols/Set.html" class="linkConstructor">Set</a></li> </ul> </div> </div> </div>   </div> <div id="contentBody" class="col-md-10"> <div class="searchsumm"> <div class="table-wrap"> <div class="table-cell" id="apisearch" data-base="../"> <div class="title">Search API</div> <div class="field"> <label for="search-field" class="search-icon"></label> <input id="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> </div> <div class="table-cell" id="apisumm"> <input type="checkbox" id="showsumms" /> <label class="apisumms" for="showsumms">Show Summaries</label> </div> </div> </div>  <div id="header" class="fineprint"> <b>GoJS</b>® Diagramming Components<br/>version 1.8.36 for JavaScript/HTML<br/>by <a href="https://www.nwoods.com/">Northwoods Software®</a> </div>  <h2 class="classTitle"> Class Map </h2>  <p class="classsummary"> An unordered iterable collection of key/value pairs that cannot contain two instances of the same key. It optionally enforces the type of the key and the type of the associated value. <p> To create a Map: <pre> var map = new go.Map("string", "number"); map.add("one", 1); map.add("two", 2); map.add("three", 3); // now map.count === 3 // and map.getValue("two") === 2 // and map.contains("zero") === false </pre> <p> You can iterate over the key/value pairs in a Map: <pre> var it = aMap.iterator; while (it.next()) { window.console.log(it.key + ": " + it.value); } </pre> Or: <pre> aMap.each(function(kvp) { window.console.log(kvp.key + ": " + kvp.value); }); </pre> But note that there is no guaranteed ordering amongst the key/value pairs. <p> Call <a href="../symbols/Map.html#toKeySet" class="linkMethod">toKeySet</a> to get a read-only <a href="../symbols/Set.html" class="linkConstructor">Set</a> that holds all of the keys of a Map. Iterating over that Set will produce values that are the keys in the Map. <p> Although not precisely implementing the features and semantics of the EcmaScript 6 <b>Map</b> class, this <b>GoJS</b> Map class has synonyms for the following methods and property: <ul> <li><b>get(key)</b>: <a href="../symbols/Map.html#getValue" class="linkMethod">getValue</a></li> <li><b>set(key,val)</b>: <a href="../symbols/Map.html#add" class="linkMethod">add</a></li> <li><b>has(key)</b>: <a href="../symbols/Map.html#contains" class="linkMethod">contains</a></li> <li><b>delete(key)</b>: <a href="../symbols/Map.html#remove" class="linkMethod">remove</a></li> <li><b>clear()</b>: <a href="../symbols/Map.html#clear" class="linkMethod">clear</a></li> <li><b>size</b>: <a href="../symbols/Map.html#count" class="linkProperty">count</a></li> </ul> </p>  <h2 id="constructor" class="summaryCaption"> Constructor <span class="nodetails"> Summary</span><span class="details"> Details</span></h2> <div class="table-responsive"> <table class="summaryTable table table-bordered table-condensed" summary="A summary of the constructor documented in the class Map."> <thead> <tr> <th scope="col" class="name">Name</th> <th scope="col" class="description">Description</th> </tr> </thead> <tbody> <tr> <td class="name" > <div class="name"> Map(keytype, valtype) </div> </td> <td class="description"> <div class="description"> <p><p>The two optional arguments to the constructor describe the types of keys and the types of values that this Map may hold.<span class="nodetails" id="xconMap"><a class="morelink" onclick="hst('conMap')">More...</a></span> <span class="details" id="conMap"> If the argument is null, it does not check the type. If the argument is a string, it must be one of: 'number' or 'string' for the key type, or 'number', 'string', 'boolean', or 'function' for the value type. Otherwise the argument must be a class function/constructor, such as <a href="../symbols/GraphObject.html" class="linkConstructor">GraphObject</a>. </span><div class="details" id="dconMap"><p> For example, the expression: <pre> new go.Map("string", go.Point)</pre> produces a Map that has keys that must be strings and whose associated values must be <a href="../symbols/Point.html" class="linkConstructor">Point</a>s.</div> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{Function|string|null=}</span> <b>keytype</b> </dt> <dd>Optional class type (constructor) or a string, for the key describing the primitive key type.</dd> <dt> <span class="light fixedFont">{Function|string|null=}</span> <b>valtype</b> </dt> <dd>Optional class type (constructor) or a string, for the value describing the primitive value type.</dd> </dl> </div> </td> </tr> </tbody> </table> </div>  <h2 class="summaryCaption">Properties<span class="nodetails"> Summary</span><span class="details"> Details</span></h2> <div class="table-responsive"> <table class="summaryTable table table-bordered table-condensed" summary="A summary of the properties documented in the class Map."> <thead> <tr> <th scope="col" class="name">Name, Value Type</th> <th scope="col" class="description">Description</th> </tr> </thead> <tbody> <tr id="count" > <td class="name"> <div class="name"> count </div> <div class="attributes"> <span class="light">{number}</span> </div> </td> <td class="description"> <div class="description">  <p>This read-only property is the number of associations in the Map. </div> </td> </tr> <tr id="iterator" > <td class="name"> <div class="name"> iterator </div> <div class="attributes"> <span class="light">{MapIterator.<K,V>}</span> </div> </td> <td class="description"> <div class="description">  <p>Gets an object that you can use for iterating over the key-value pairs of a Map.<span class="nodetails" id="xpropiterator"><a class="morelink" onclick="hst('propiterator')">More...</a></span> <span class="details" id="propiterator"> Typical usage: <pre> var it = aMap.iterator; while (it.next()) { window.console.log("the key: " + it.key + " has value: " + it.value); } </pre></span> </div> </td> </tr> <tr id="iteratorKeys" > <td class="name"> <div class="name"> iteratorKeys </div> <div class="attributes"> <span class="light">{Iterator.<K>}</span> <span class="since" title="since">1.4</span> </div> </td> <td class="description"> <div class="description">  <p>Gets an object that you can use for iterating over the keys of a Map.<span class="nodetails" id="xpropiteratorKeys"><a class="morelink" onclick="hst('propiteratorKeys')">More...</a></span> <span class="details" id="propiteratorKeys"> Typical usage: <pre> var it = aMap.iteratorKeys; while (it.next()) { window.console.log("key: " + it.value); } </pre></span> </div> </td> </tr> <tr id="iteratorValues" > <td class="name"> <div class="name"> iteratorValues </div> <div class="attributes"> <span class="light">{Iterator.<V>}</span> <span class="since" title="since">1.4</span> </div> </td> <td class="description"> <div class="description">  <p>Gets an object that you can use for iterating over the values of a Map.<span class="nodetails" id="xpropiteratorValues"><a class="morelink" onclick="hst('propiteratorValues')">More...</a></span> <span class="details" id="propiteratorValues"> Typical usage: <pre> var it = aMap.iteratorValues; while (it.next()) { window.console.log("value: " + it.value); } </pre></span> </div> </td> </tr> </tbody> </table> </div>  <h2 class="summaryCaption">Method <span class="nodetails"> Summary</span><span class="details"> Details</span></h2> <div class="table-responsive"> <table class="summaryTable table table-bordered table-condensed" summary="A summary of the methods documented in the class Map."> <thead> <tr> <th scope="col" class="name">Name, Return Type</th> <th scope="col" class="description">Description</th> </tr> </thead> <tbody> <tr id="add"> <td class="name"> <div class="name"> add(key, val) </div> <div class="attributes"> <span class="light">{boolean}</span> </div> </td> <td class="description"> <div class="description"> <p><p>Adds a key-value association to the Map, or replaces the value associated with the key if the key was already present in the map.<span class="nodetails" id="xmethadd"><a class="morelink" onclick="hst('methadd')">More...</a></span> <span class="details" id="methadd"> </span><div class="details" id="dmethadd"><p> Be careful not to call this method while iterating over the collection.</div> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{K}</span> <b>key</b> </dt> <dd>The key or index for storing the value in the Map.</dd> <dt> <span class="light fixedFont">{V}</span> <b>val</b> </dt> <dd>The value to add to the Map, associated with the key.</dd> </dl> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{boolean}</span> true if the key was not already present in the Map; false if it was.</dt> </dl> </div> </td> </tr> <tr id="addAll"> <td class="name"> <div class="name"> addAll(coll) </div> <div class="attributes"> <span class="light">{Map.<K,V>}</span> </div> </td> <td class="description"> <div class="description"> <p><p>Adds all of the key-value pairs of another Map to this Map.<span class="nodetails" id="xmethaddAll"><a class="morelink" onclick="hst('methaddAll')">More...</a></span> <span class="details" id="methaddAll"> If a key is already present in this Map, its value is replaced with the corresponding value from the given map. </span><div class="details" id="dmethaddAll"><p> Be careful not to call this method while iterating over the collection.</div> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{Iterable.<KeyValuePair.<K,V>>|Array.<*>}</span> <b>coll</b> </dt> <dd>the collection of keys/values to add, or an Array of { key: ..., value: ... } objects.</dd> </dl> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{Map.<K,V>}</span> this map.</dt> </dl> </div> </td> </tr> <tr id="all"> <td class="name"> <div class="name"> all(pred) </div> <div class="attributes"> <span class="light">{boolean}</span> <span class="since" title="since">1.4</span> </div> </td> <td class="description"> <div class="description"> <p><p>This is true if all invocations of the given predicate on items in the collection are true.<span class="nodetails" id="xmethall"><a class="morelink" onclick="hst('methall')">More...</a></span> <span class="details" id="methall"> </span><div class="details" id="dmethall"><p> Call the given predicate on each key/value pair in the collection. As soon as a call returns false, this returns false. Otherwise this returns true. For an empty collection this returns true.</div> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{function(KeyValuePair.<K,V>):boolean}</span> <b>pred</b> </dt> <dd>The argument to the predicate will be an object with both "key" and "value" properties. This function must not have any side-effects.</dd> </dl> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{boolean}</span> True if all predicate calls are true; false otherwise.</dt> </dl> </div> </td> </tr> <tr id="any"> <td class="name"> <div class="name"> any(pred) </div> <div class="attributes"> <span class="light">{boolean}</span> <span class="since" title="since">1.4</span> </div> </td> <td class="description"> <div class="description"> <p><p>This is true if any invocation of the given predicate on items in the collection is true.<span class="nodetails" id="xmethany"><a class="morelink" onclick="hst('methany')">More...</a></span> <span class="details" id="methany"> </span><div class="details" id="dmethany"><p> Call the given predicate on each key/value pair in the collection. As soon as a call returns true, this returns true. Otherwise this returns false. For an empty collection this returns false.</div> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{function(KeyValuePair.<K,V>):boolean}</span> <b>pred</b> </dt> <dd>The argument to the predicate will be an object with both "key" and "value" properties. This function must not have any side-effects.</dd> </dl> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{boolean}</span> True if any predicate call is true; false otherwise.</dt> </dl> </div> </td> </tr> <tr id="clear"> <td class="name"> <div class="name"> clear() </div> <div class="attributes"> </div> </td> <td class="description"> <div class="description"> <p><p>Clears the Map, removing all key-value associations.<span class="nodetails" id="xmethclear"><a class="morelink" onclick="hst('methclear')">More...</a></span> <span class="details" id="methclear"> This sets the <a href="../symbols/Map.html#count" class="linkProperty">count</a> to zero. </span><div class="details" id="dmethclear"><p> Be careful not to call this method while iterating over the collection.</div> </div> </td> </tr> <tr id="contains"> <td class="name"> <div class="name"> contains(key) </div> <div class="attributes"> <span class="light">{boolean}</span> </div> </td> <td class="description"> <div class="description"> <p><p>Returns whether the given key is in this Map.<span class="nodetails" id="xmethcontains"><a class="morelink" onclick="hst('methcontains')">More...</a></span> <span class="details" id="methcontains"></span> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{K}</span> <b>key</b> </dt> <dd>The key to look up in the Map.</dd> </dl> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{boolean}</span> Whether or not the key is contained within the Map.</dt> </dl> </div> </td> </tr> <tr id="copy"> <td class="name"> <div class="name"> copy() </div> <div class="attributes"> <span class="light">{Map.<K,V>}</span> </div> </td> <td class="description"> <div class="description"> <p><p>Makes a shallow copy of this Map.<span class="nodetails" id="xmethcopy"><a class="morelink" onclick="hst('methcopy')">More...</a></span> <span class="details" id="methcopy"> The keys and their values are not copied, so if they are objects they may continue to be shared with the original Map.</span> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{Map.<K,V>}</span> The new Map.</dt> </dl> </div> </td> </tr> <tr id="each"> <td class="name"> <div class="name"> each(func) </div> <div class="attributes"> <span class="light">{Map.<K,V>}</span> <span class="since" title="since">1.4</span> </div> </td> <td class="description"> <div class="description"> <p><p>Call the given function on each key/value pair in the collection.<span class="nodetails" id="xmetheach"><a class="morelink" onclick="hst('metheach')">More...</a></span> <span class="details" id="metheach"></span> <dl class="detailList"> <dt class="heading">Parameters:</dt> <dt> <span class="light fixedFont">{function(KeyValuePair.<K,V>)}</span> <b>func</b> </dt> <dd>The argument to the function will be an object with both "key" and "value" properties. This function must not modify the collection.</dd> </dl> <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{Map.<K,V>}</span> this map itself</dt> </dl> </div> </td> </tr> <tr id="first"> <td class="name"> <div class="name"> first() </div> <div class="attributes"> <span class="light">{KeyValuePair.<K,V>}</span> <span class="since" title="since">1.4</span> </div> </td> <td class="description"> <div class="description"> <p><p>Returns the first key/value pair in the collection, or null if there is none. <dl class="detailList"> <dt class="heading">Returns:</dt> <dt><span class="light fixedFont">{KeyValuePair.<K,V>}</span> This returns null if there are no items