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<div class="title">dictionary object </div> </div>
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<div class="contents">
<div class="textblock"><p><b>Path:</b> /sdk/add_on/scriptdictionary/</p>
<p>The dictionary object maps string values to values or objects of other types.</p>
<p>Register with <code>RegisterScriptDictionary(asIScriptEngine*)</code>.</p>
<p>Compile the add-on with the pre-processor define AS_USE_STLNAMES=1 to register the methods with the same names as used by C++ STL where the methods have the same significance. Not all methods from STL is implemented in the add-on, but many of the most frequent once are so a port from script to C++ and vice versa might be easier if STL names are used.</p>
<h1><a class="anchor" id="doc_addon_dict_1"></a>
Public C++ interface</h1>
<div class="fragment"><div class="line"><span class="keyword">typedef</span> std::string dictKey;</div>
<div class="line"> </div>
<div class="line"><span class="keyword">class </span>CScriptDictionary</div>
<div class="line">{</div>
<div class="line"><span class="keyword">public</span>:</div>
<div class="line"> <span class="comment">// Factory functions</span></div>
<div class="line"> <span class="keyword">static</span> CScriptDictionary *Create(<a class="code" href="classas_i_script_engine.html">asIScriptEngine</a> *engine);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Reference counting</span></div>
<div class="line"> <span class="keywordtype">void</span> AddRef() <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">void</span> Release() <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Perform a shallow copy of the other dictionary</span></div>
<div class="line"> CScriptDictionary &amp;operator=(<span class="keyword">const</span> CScriptDictionary &amp;other);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Sets a key/value pair</span></div>
<div class="line"> <span class="keywordtype">void</span> Set(<span class="keyword">const</span> dictKey &amp;key, <span class="keywordtype">void</span> *value, <span class="keywordtype">int</span> typeId);</div>
<div class="line"> <span class="keywordtype">void</span> Set(<span class="keyword">const</span> dictKey &amp;key, <a class="code" href="angelscript_8h.html#aa8044b56ee56e2350b06f1e7207b43df">asINT64</a> &amp;value);</div>
<div class="line"> <span class="keywordtype">void</span> Set(<span class="keyword">const</span> dictKey &amp;key, <span class="keywordtype">double</span> &amp;value);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Gets the stored value. Returns false if the value isn&#39;t compatible with informed type </span></div>
<div class="line"> <span class="keywordtype">bool</span> Get(<span class="keyword">const</span> dictKey &amp;key, <span class="keywordtype">void</span> *value, <span class="keywordtype">int</span> typeId) <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">bool</span> Get(<span class="keyword">const</span> dictKey &amp;key, <a class="code" href="angelscript_8h.html#aa8044b56ee56e2350b06f1e7207b43df">asINT64</a> &amp;value) <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">bool</span> Get(<span class="keyword">const</span> dictKey &amp;key, <span class="keywordtype">double</span> &amp;value) <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Index accessors. If the dictionary is not const it inserts the value if it doesn&#39;t already exist</span></div>
<div class="line"> <span class="comment">// If the dictionary is const then a script exception is set if it doesn&#39;t exist and a null pointer is returned</span></div>
<div class="line"> CScriptDictValue *operator[](<span class="keyword">const</span> dictKey &amp;key);</div>
<div class="line"> <span class="keyword">const</span> CScriptDictValue *operator[](<span class="keyword">const</span> dictKey &amp;key) <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Returns the type id of the stored value, or negative if it doesn&#39;t exist</span></div>
<div class="line"> <span class="keywordtype">int</span> GetTypeId(<span class="keyword">const</span> dictKey &amp;key) <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Returns true if the key is set</span></div>
<div class="line"> <span class="keywordtype">bool</span> Exists(<span class="keyword">const</span> dictKey &amp;key) <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Returns true if the dictionary is empty</span></div>
<div class="line"> <span class="keywordtype">bool</span> IsEmpty() <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Returns the number of keys in the dictionary</span></div>
<div class="line"> <a class="code" href="angelscript_8h.html#ac8186f029686800b7ce36bde4a55c815">asUINT</a> GetSize() <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Deletes the key</span></div>
<div class="line"> <span class="keywordtype">bool</span> Delete(<span class="keyword">const</span> dictKey &amp;key);</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Deletes all keys</span></div>
<div class="line"> <span class="keywordtype">void</span> DeleteAll();</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Get an array of all keys</span></div>
<div class="line"> CScriptArray *GetKeys() <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// STL style iterator</span></div>
<div class="line"> <span class="keyword">class </span>CIterator</div>
<div class="line"> {</div>
<div class="line"> <span class="keyword">public</span>:</div>
<div class="line"> <span class="keywordtype">void</span> operator++(); <span class="comment">// Pre-increment</span></div>
<div class="line"> <span class="keywordtype">void</span> operator++(<span class="keywordtype">int</span>); <span class="comment">// Post-increment</span></div>
<div class="line"> </div>
<div class="line"> <span class="keywordtype">bool</span> operator==(<span class="keyword">const</span> CIterator &amp;other) <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">bool</span> operator!=(<span class="keyword">const</span> CIterator &amp;other) <span class="keyword">const</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Accessors</span></div>
<div class="line"> <span class="keyword">const</span> dictKey &amp;GetKey() <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">int</span> GetTypeId() <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">bool</span> GetValue(<a class="code" href="angelscript_8h.html#aa8044b56ee56e2350b06f1e7207b43df">asINT64</a> &amp;value) <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">bool</span> GetValue(<span class="keywordtype">double</span> &amp;value) <span class="keyword">const</span>;</div>
<div class="line"> <span class="keywordtype">bool</span> GetValue(<span class="keywordtype">void</span> *value, <span class="keywordtype">int</span> typeId) <span class="keyword">const</span>;</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">void</span> * GetAddressOfValue() <span class="keyword">const</span>;</div>
<div class="line"> };</div>
<div class="line"> </div>
<div class="line"> CIterator begin() <span class="keyword">const</span>;</div>
<div class="line"> CIterator end() <span class="keyword">const</span>;</div>
<div class="line"> CIterator find(<span class="keyword">const</span> dictKey &amp;key) <span class="keyword">const</span>;</div>
<div class="line">};</div>
</div><!-- fragment --><h1><a class="anchor" id="doc_addon_dict_2"></a>
Public script interface</h1>
<dl class="section see"><dt>See also</dt><dd><a class="el" href="doc_datatypes_dictionary.html">Dictionaries in the script language</a></dd></dl>
<h1><a class="anchor" id="doc_addon_dict_3"></a>
Example usage from C++</h1>
<p>Here's a skeleton for iterating over the entries in the dictionary. For brevity the code doesn't show how to interpret the values, for more information on that see <a class="el" href="angelscript_8h.html#ae8c3a67a97321be53181e9ed396ad83a">asETypeIdFlags</a> and <a class="el" href="classas_i_script_engine.html#a55cc2d9592651538efcf79eb8106a867">asIScriptEngine::GetTypeInfoById</a>.</p>
<div class="fragment"><div class="line"><span class="keywordtype">void</span> iterateDictionary(CScriptDictionary *dict)</div>
<div class="line">{</div>
<div class="line"> <span class="comment">// Iterate over each entry</span></div>
<div class="line"> <span class="keywordflow">for</span> (<span class="keyword">auto</span> it : *dict)</div>
<div class="line"> {</div>
<div class="line"> <span class="comment">// Determine the name of the key</span></div>
<div class="line"> std::string keyName = it.GetKey();</div>
<div class="line"> cout &lt;&lt; <span class="stringliteral">&quot;\&quot;&quot;</span> &lt;&lt; keyName &lt;&lt; <span class="stringliteral">&quot;\&quot;&quot;</span> &lt;&lt; <span class="stringliteral">&quot; = &quot;</span>;</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Get the type and address of the value</span></div>
<div class="line"> <span class="keywordtype">int</span> typeId = it.GetTypeId();</div>
<div class="line"> <span class="keyword">const</span> <span class="keywordtype">void</span> *addressOfValue = it.GetAddressOfValue();</div>
<div class="line"> </div>
<div class="line"> <span class="comment">// Cast the value to the correct C++ type according to the typeId and then print it</span></div>
<div class="line"> ...</div>
<div class="line"> }</div>
<div class="line">}</div>
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<div class="ttc" id="aangelscript_8h_html_aa8044b56ee56e2350b06f1e7207b43df"><div class="ttname"><a href="angelscript_8h.html#aa8044b56ee56e2350b06f1e7207b43df">asINT64</a></div><div class="ttdeci">__int64 asINT64</div><div class="ttdoc">64 bit integer</div><div class="ttdef"><b>Definition:</b> angelscript.h:620</div></div>
<div class="ttc" id="aclassas_i_script_engine_html"><div class="ttname"><a href="classas_i_script_engine.html">asIScriptEngine</a></div><div class="ttdoc">The engine interface.</div><div class="ttdef"><b>Definition:</b> angelscript.h:1092</div></div>
<div class="ttc" id="aangelscript_8h_html_ac8186f029686800b7ce36bde4a55c815"><div class="ttname"><a href="angelscript_8h.html#ac8186f029686800b7ce36bde4a55c815">asUINT</a></div><div class="ttdeci">unsigned int asUINT</div><div class="ttdoc">32 bit unsigned integer</div><div class="ttdef"><b>Definition:</b> angelscript.h:600</div></div>
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