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<h1><a href="../../">wren</a></h1>
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<h2>a classy little scripting language</h2>
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<h2>core classes</h2>
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<ul>
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<li><a href="bool.html">Bool</a></li>
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<li><a href="class.html">Class</a></li>
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<li><a href="sequence.html">Sequence</a></li>
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<td colspan="2"><h2>core classes</h2></td>
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<main>
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<h1>System Class</h1>
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<p>The System class is a grab-bag of functionality exposed by the VM, mostly for
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use during development or debugging. </p>
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<h2>Static Methods <a href="#static-methods" name="static-methods" class="header-anchor">#</a></h2>
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<h3>System.<strong>clock</strong> <a href="#system.clock" name="system.clock" class="header-anchor">#</a></h3>
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<p>Returns the number of seconds (including fractional seconds) since the program
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was started. This is usually used for benchmarking. </p>
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<h3>System.<strong>gc</strong>() <a href="#system.gc()" name="system.gc()" class="header-anchor">#</a></h3>
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<p>Requests that the VM perform an immediate garbage collection to free unused
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memory. </p>
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<h3>System.<strong>print</strong>() <a href="#system.print()" name="system.print()" class="header-anchor">#</a></h3>
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<p>Prints a single newline to the console. </p>
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<h3>System.<strong>print</strong>(object) <a href="#system.print(object)" name="system.print(object)" class="header-anchor">#</a></h3>
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<p>Prints <code>object</code> to the console followed by a newline. If not already a string,
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the object is converted to a string by calling <code>toString</code> on it. </p>
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<div class="codehilite"><pre><span class="vg">System</span><span class="o">.</span><span class="n">print</span><span class="p">(</span><span class="s">"I like bananas"</span><span class="p">)</span> <span class="output">I like bananas</span>
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</pre></div>
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<h3>System.<strong>printAll</strong>(sequence) <a href="#system.printall(sequence)" name="system.printall(sequence)" class="header-anchor">#</a></h3>
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<p>Iterates over <code>sequence</code> and prints each element, then prints a single newline
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at the end. Each element is converted to a string by calling <code>toString</code> on it. </p>
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<div class="codehilite"><pre><span class="vg">System</span><span class="o">.</span><span class="n">printAll</span><span class="p">([</span><span class="mi">1</span><span class="p">,</span> <span class="p">[</span><span class="mi">2</span><span class="p">,</span> <span class="mi">3</span><span class="p">],</span> <span class="mi">4</span><span class="p">])</span> <span class="output">1[2, 3]4</span>
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</pre></div>
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<h3>System.<strong>write</strong>(object) <a href="#system.write(object)" name="system.write(object)" class="header-anchor">#</a></h3>
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<p>Prints a single value to the console, but does not print a newline character
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afterwards. Converts the value to a string by calling <code>toString</code> on it. </p>
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<div class="codehilite"><pre><span class="vg">System</span><span class="o">.</span><span class="n">write</span><span class="p">(</span><span class="mi">4</span> <span class="o">+</span> <span class="mi">5</span><span class="p">)</span> <span class="output">9</span>
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</pre></div>
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<p>In the above example, the result of <code>4 + 5</code> is printed, and then the prompt is
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printed on the same line because no newline character was printed afterwards. </p>
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</main>
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<footer>
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<p>Wren lives
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<a href="https://github.com/munificent/wren">on GitHub</a>
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— Made with ❤ by
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<a href="http://journal.stuffwithstuff.com/">Bob Nystrom</a> and
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<a href="https://github.com/munificent/wren/blob/master/AUTHORS">friends</a>.
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