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                <li class="toctree-l3"><a href="#integration">Integration</a></li>
                
            
                <li class="toctree-l3"><a href="#stack-interaction">Stack Interaction</a></li>
                
            
                <li class="toctree-l3"><a href="#from-c-to-lua">From C++ to Lua</a></li>
                
            
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                <h1 id="integration">Integration</h1>
<p>Luwra does not provide a standalone version of Lua nor does it capsule its features. This means that
all functions and classes operate on
<a href="http://www.lua.org/manual/5.3/manual.html#lua_State">lua_State</a> (or the alias
<a href="../reference/namespaceluwra.html#a2c037b44385367826eb4e931b5b8197d">State</a>). Doing this allows you to
integrate Luwra however you like.</p>
<h1 id="stack-interaction">Stack Interaction</h1>
<p>Although Luwra provides a variety of features, its main concern is efficient and safe interaction
with the Lua stack.</p>
<p>A fundamental aspect of this is the abstract template <a href="../reference/structluwra_1_1Value.html">Value</a>.
Every type which can be pushed onto or read from the stack has a specialization of it.
Useful implementations are provides out of the box:</p>
<table>
<thead>
<tr>
<th>C++ type</th>
<th>Pushable</th>
<th>Readable</th>
<th>Lua type</th>
</tr>
</thead>
<tbody>
<tr>
<td>bool</td>
<td>yes</td>
<td>yes</td>
<td>boolean</td>
</tr>
<tr>
<td>signed char</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>signed short</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>signed int</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>signed long int</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>signed long long int</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>unsigned char</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>unsigned short</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>unsigned int</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>unsigned long int</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>unsigned long long int</td>
<td>yes</td>
<td>yes</td>
<td>number (integer since 5.3)</td>
</tr>
<tr>
<td>float</td>
<td>yes</td>
<td>yes</td>
<td>number</td>
</tr>
<tr>
<td>double</td>
<td>yes</td>
<td>yes</td>
<td>number</td>
</tr>
<tr>
<td>long double</td>
<td>yes</td>
<td>yes</td>
<td>number</td>
</tr>
<tr>
<td>const char*</td>
<td>yes</td>
<td>yes</td>
<td>string</td>
</tr>
<tr>
<td>std::string</td>
<td>yes</td>
<td>yes</td>
<td>string</td>
</tr>
<tr>
<td>std::nullptr_t</td>
<td>yes</td>
<td>yes</td>
<td>nil</td>
</tr>
<tr>
<td>std::tuple&lt;T&gt;</td>
<td>yes</td>
<td>no</td>
<td><em>depends on the tuple contents</em></td>
</tr>
<tr>
<td><a href="http://www.lua.org/manual/5.3/manual.html#lua_CFunction">lua_CFunction</a></td>
<td>yes</td>
<td>no</td>
<td>function</td>
</tr>
<tr>
<td><a href="../reference/structluwra_1_1Value_3_01NativeFunction_3_01R_07A_8_8_8_08_4_01_4.html">NativeFunction&lt;R(A...)&gt;</a></td>
<td>no</td>
<td>yes</td>
<td>function</td>
</tr>
<tr>
<td><a href="../reference/structluwra_1_1Value_3_01FieldVector_01_4.html">FieldVector</a></td>
<td>yes</td>
<td>no</td>
<td>table</td>
</tr>
</tbody>
</table>
<p><strong>Note:</strong> Some numeric types have a different size than their matching Lua type - they will be
truncated during push or read operations.</p>
<h1 id="from-c-to-lua">From C++ to Lua</h1>
<p>When pushing values onto the stack you can either use
<a href="../reference/structluwra_1_1Value.html#aa376d68285606c206562b822e8187384">Value&lt;T&gt;::push</a> or the more
convenient <a href="../reference/namespaceluwra.html#ae8e7eab11fc2cf3f258ffd81571066fa">push</a>.
See these examples:</p>
<pre><code class="c++">// Push an integer
luwra::push(lua, 1338);

// Push a number
luwra::push(lua, 13.37);

// Push a boolean
luwra::push(lua, false);

// Push a string
luwra::push(lua, &quot;Hello World&quot;);
</code></pre>
              
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