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| 25 | + <div id="projectname">ChaiScript |
| 26 | +  <span id="projectnumber">5.6.0</span> |
| 27 | + </div> |
| 28 | + <div id="projectbrief">An easy to use embedded scripting language for C++.</div> |
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| 80 | + <div class="headertitle"> |
| 81 | +<div class="title">ChaiScript Language Getting Started </div> </div> |
| 82 | +</div><!--header--> |
| 83 | +<div class="contents"> |
| 84 | +<div class="textblock"><p>ChaiScript is a simple language that should feel familiar to anyone who knows C++ or ECMAScript (JavaScript). </p> |
| 85 | +<hr/> |
| 86 | +<h1><a class="anchor" id="chaiscriptloops"></a> |
| 87 | +Loops</h1> |
| 88 | +<p>Common looping constructs exist in ChaiScript</p> |
| 89 | +<div class="fragment"><div class="line"><a class="code" href="namespacechaiscript.html#a9f286014050c479fd33bf935f781eca9">var</a> i = 0;</div> |
| 90 | +<div class="line"><span class="keywordflow">while</span> (i < 10)</div> |
| 91 | +<div class="line">{</div> |
| 92 | +<div class="line"> <span class="comment">// do something</span></div> |
| 93 | +<div class="line"> ++i;</div> |
| 94 | +<div class="line">}</div> |
| 95 | +</div><!-- fragment --><div class="fragment"><div class="line"><span class="keywordflow">for</span> (<a class="code" href="namespacechaiscript.html#a9f286014050c479fd33bf935f781eca9">var</a> i = 0; i < 10; ++i)</div> |
| 96 | +<div class="line">{</div> |
| 97 | +<div class="line"> <span class="comment">// do something</span></div> |
| 98 | +<div class="line">}</div> |
| 99 | +</div><!-- fragment --><dl class="section see"><dt>See Also</dt><dd><a class="el" href="LangKeywordRef.html#keywordfor">for</a> </dd> |
| 100 | +<dd> |
| 101 | +<a class="el" href="LangKeywordRef.html#keywordwhile">while</a> <hr/> |
| 102 | +</dd></dl> |
| 103 | +<h1><a class="anchor" id="chaiscriptifs"></a> |
| 104 | +Conditionals</h1> |
| 105 | +<p>If statements work as expected</p> |
| 106 | +<div class="fragment"><div class="line"><a class="code" href="namespacechaiscript.html#a9f286014050c479fd33bf935f781eca9">var</a> b = <span class="keyword">true</span>;</div> |
| 107 | +<div class="line"></div> |
| 108 | +<div class="line"><span class="keywordflow">if</span> (b) {</div> |
| 109 | +<div class="line"> <span class="comment">// do something</span></div> |
| 110 | +<div class="line">} <span class="keywordflow">else</span> <span class="keywordflow">if</span> (c < 10) {</div> |
| 111 | +<div class="line"> <span class="comment">// do something else</span></div> |
| 112 | +<div class="line">} <span class="keywordflow">else</span> {</div> |
| 113 | +<div class="line"> <span class="comment">// or do this</span></div> |
| 114 | +<div class="line">}</div> |
| 115 | +</div><!-- fragment --><dl class="section see"><dt>See Also</dt><dd><a class="el" href="LangKeywordRef.html#keywordif">if</a> <hr/> |
| 116 | +</dd></dl> |
| 117 | +<h1><a class="anchor" id="chaiscriptfunctions"></a> |
| 118 | +Functions</h1> |
| 119 | +<p>Functions are defined with the def keyword</p> |
| 120 | +<div class="fragment"><div class="line">def myfun(x) { <a class="code" href="namespaceChaiScript__Language.html#a997db82b5a5b891b648ea6a8b9cf3271">print</a>(x); }</div> |
| 121 | +<div class="line"></div> |
| 122 | +<div class="line">myfun(10);</div> |
| 123 | +</div><!-- fragment --><p>Functions may have "guards" which determine if which is called.</p> |
| 124 | +<div class="fragment"><div class="line">eval> def myfun2(x) : x < 10 { <a class="code" href="namespaceChaiScript__Language.html#a997db82b5a5b891b648ea6a8b9cf3271">print</a>(<span class="stringliteral">"less than 10"</span>); }</div> |
| 125 | +<div class="line">eval> def myfun2(x) : x >= 10 { <a class="code" href="namespaceChaiScript__Language.html#a997db82b5a5b891b648ea6a8b9cf3271">print</a>(<span class="stringliteral">"10 or greater"</span>); }</div> |
| 126 | +<div class="line">eval> myfun2(5)</div> |
| 127 | +<div class="line">less than 10</div> |
| 128 | +<div class="line">eval> myfun2(12)</div> |
| 129 | +<div class="line">10 or greater</div> |
| 130 | +</div><!-- fragment --><dl class="section see"><dt>See Also</dt><dd><a class="el" href="LangKeywordRef.html#keyworddef">def</a> </dd> |
| 131 | +<dd> |
| 132 | +<a class="el" href="LangKeywordRef.html#keywordattr">attr</a> </dd> |
| 133 | +<dd> |
| 134 | +<a class="el" href="LangObjectSystemRef.html">ChaiScript Language Object Model Reference</a> <hr/> |
| 135 | +</dd></dl> |
| 136 | +<h1><a class="anchor" id="chaiscriptfunctionobjects"></a> |
| 137 | +Function Objects</h1> |
| 138 | +<p>Functions are first class types in ChaiScript and can be used as variables.</p> |
| 139 | +<div class="fragment"><div class="line">eval> <a class="code" href="namespacechaiscript.html#a9f286014050c479fd33bf935f781eca9">var</a> p = <a class="code" href="namespaceChaiScript__Language.html#a997db82b5a5b891b648ea6a8b9cf3271">print</a>;</div> |
| 140 | +<div class="line">eval> p(1);</div> |
| 141 | +<div class="line">1</div> |
| 142 | +</div><!-- fragment --><p>They can also be passed to functions.</p> |
| 143 | +<div class="fragment"><div class="line">eval> def callfunc(f, lhs, rhs) { <span class="keywordflow">return</span> f(lhs, rhs); }</div> |
| 144 | +<div class="line">eval> def do_something(lhs, rhs) { <a class="code" href="namespaceChaiScript__Language.html#a997db82b5a5b891b648ea6a8b9cf3271">print</a>(<span class="stringliteral">"lhs: ${lhs}, rhs: ${rhs}"</span>); }</div> |
| 145 | +<div class="line">eval> callfunc(do_something, 1, 2);</div> |
| 146 | +<div class="line">lhs: 1, rhs: 2</div> |
| 147 | +</div><!-- fragment --><p>Operators can also be treated as functions by using the back tick operator. Building on the above example:</p> |
| 148 | +<div class="fragment"><div class="line">eval> callfunc(`+`, 1, 4);</div> |
| 149 | +<div class="line">5</div> |
| 150 | +<div class="line">eval> callfunc(`*`, 3, 2);</div> |
| 151 | +<div class="line">6</div> |
| 152 | +</div><!-- fragment --> <hr/> |
| 153 | +<dl class="section see"><dt>See Also</dt><dd><a class="el" href="LangKeywordRef.html">ChaiScript Language Keyword Reference</a> </dd> |
| 154 | +<dd> |
| 155 | +<a class="el" href="namespaceChaiScript__Language.html" title="Items in this namespace exist in the ChaiScript language runtime. They are not part of the C++ API...">ChaiScript_Language</a> for Built in Functions </dd></dl> |
| 156 | +</div></div><!-- contents --> |
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| 159 | +Generated on Mon Jan 19 2015 09:16:04 for ChaiScript by  <a href="http://www.doxygen.org/index.html"> |
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