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https://github.com/psychopy/psychojs.git
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960 lines
13 KiB
HTML
960 lines
13 KiB
HTML
<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="utf-8">
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<title>JSDoc: Class: Scheduler</title>
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</head>
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<body>
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<div id="main">
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<h1 class="page-title">Class: Scheduler</h1>
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<section>
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<header>
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<h2><span class="attribs"><span class="type-signature"></span></span>
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<span class="ancestors"><a href="module-util.html">util</a>.</span>Scheduler<span class="signature">(psychoJS)</span><span class="type-signature"></span></h2>
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</header>
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<article>
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<div class="container-overview">
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<h4 class="name" id="Scheduler"><span class="type-signature"></span>new Scheduler<span class="signature">(psychoJS)</span><span class="type-signature"></span></h4>
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<div class="description">
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<p>A scheduler helps run the main loop by managing scheduled functions,
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called tasks, after each frame is displayed.</p>
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<p>
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Tasks are either another <a href="module-util.Scheduler.html">Scheduler</a>, or a
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JavaScript functions returning one of the following codes:
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<ul>
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<li>Scheduler.Event.NEXT: Move onto the next task *without* rendering the scene first.</li>
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<li>Scheduler.Event.FLIP_REPEAT: Render the scene and repeat the task.</li>
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<li>Scheduler.Event.FLIP_NEXT: Render the scene and move onto the next task.</li>
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<li>Scheduler.Event.QUIT: Quit the scheduler.</li>
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</ul>
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</p>
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<p> It is possible to create sub-schedulers, e.g. to handle loops.
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Sub-schedulers are added to a parent scheduler as a normal
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task would be by calling <a href="module-util.Scheduler.html#add">scheduler.add(subScheduler)</a>.</p>
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<p> Conditional branching is also available:
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<a href="module-util.Scheduler.html#addConditional">scheduler.addConditionalBranches</a></p>
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</div>
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<h5>Parameters:</h5>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>psychoJS</code></td>
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<td class="type">
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<span class="param-type"><a href="module-core.PsychoJS.html">module:core.PsychoJS</a></span>
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</td>
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<td class="description last">the PsychoJS instance</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line11">line 11</a>
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</li></ul></dd>
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</dl>
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</div>
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<h3 class="subsection-title">Members</h3>
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<h4 class="name" id="add"><span class="type-signature"></span>add<span class="type-signature"></span></h4>
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<div class="description">
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Schedule a new task.
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</div>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line76">line 76</a>
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</li></ul></dd>
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</dl>
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<h4 class="name" id="addConditional"><span class="type-signature"></span>addConditional<span class="type-signature"></span></h4>
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<div class="description">
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Schedule a series of task or another, based on a condition.
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<p>Note: the tasks are <a href="module-util.Scheduler.html">sub-schedulers</a>.</p>
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</div>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line97">line 97</a>
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</li></ul></dd>
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</dl>
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<h4 class="name" id="Event"><span class="type-signature">(readonly) </span>Event<span class="type-signature"> :Symbol</span></h4>
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<div class="description">
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Events.
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</div>
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<h5>Type:</h5>
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<ul>
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<li>
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<span class="param-type">Symbol</span>
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</li>
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</ul>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line271">line 271</a>
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</li></ul></dd>
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</dl>
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<h4 class="name" id="start"><span class="type-signature"></span>start<span class="type-signature"></span></h4>
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<div class="description">
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Start this scheduler.
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<p>Note: tasks are run after each animation frame.</p>
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</div>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line129">line 129</a>
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</li></ul></dd>
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</dl>
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<h4 class="name" id="status"><span class="type-signature"></span>status<span class="type-signature"></span></h4>
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<div class="description">
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Get the status of the scheduler.
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</div>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line57">line 57</a>
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</li></ul></dd>
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</dl>
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<h4 class="name" id="Status"><span class="type-signature">(readonly) </span>Status<span class="type-signature"> :Symbol</span></h4>
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<div class="description">
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Status.
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</div>
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<h5>Type:</h5>
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<ul>
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<li>
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<span class="param-type">Symbol</span>
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</li>
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</ul>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line302">line 302</a>
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</li></ul></dd>
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</dl>
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<h4 class="name" id="stop"><span class="type-signature"></span>stop<span class="type-signature"></span></h4>
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<div class="description">
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Stop this scheduler.
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</div>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line177">line 177</a>
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</li></ul></dd>
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</dl>
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<h3 class="subsection-title">Type Definitions</h3>
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<h4 class="name" id="~Condition"><span class="type-signature"></span>Condition<span class="signature">()</span><span class="type-signature"> → {boolean}</span></h4>
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<div class="description">
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Condition evaluated when the task is run.
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</div>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line91">line 91</a>
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</li></ul></dd>
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</dl>
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<h5>Returns:</h5>
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<dl>
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<dt>
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Type
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</dt>
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<dd>
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<span class="param-type">boolean</span>
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</dd>
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</dl>
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<h4 class="name" id="~Task"><span class="type-signature"></span>Task<span class="signature">(args<span class="signature-attributes">opt</span>)</span><span class="type-signature"></span></h4>
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<div class="description">
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Task to be run by the scheduler.
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</div>
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<h5>Parameters:</h5>
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<table class="params">
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<thead>
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<tr>
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<th>Name</th>
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<th>Type</th>
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<th>Attributes</th>
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<th class="last">Description</th>
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</tr>
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</thead>
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<tbody>
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<tr>
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<td class="name"><code>args</code></td>
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<td class="type">
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<span class="param-type">*</span>
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</td>
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<td class="attributes">
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<optional><br>
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</td>
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<td class="description last">optional arguments</td>
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</tr>
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</tbody>
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</table>
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<dl class="details">
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<dt class="tag-source">Source:</dt>
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<dd class="tag-source"><ul class="dummy"><li>
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<a href="util_Scheduler.js.html">util/Scheduler.js</a>, <a href="util_Scheduler.js.html#line70">line 70</a>
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