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<div class="header">  <div class="summary"><a href="#pub-types">Public Types</a> &#124;<a href="#pub-methods">Public Member Functions</a> &#124;<a href="#pub-static-methods">Static Public Member Functions</a> &#124;<a href="classfsdk_1_1_promise-members.html">List of all members</a>  </div>  <div class="headertitle"><div class="title">fsdk::Promise&lt; T &gt; Class Template Reference</div>  </div></div><!--header--><div class="contents">
<p><a class="el" href="classfsdk_1_1_promise.html" title="Promise class to support asynchronous data retrieval Look into std::promise semantics to understand i...">Promise</a> class to support asynchronous data retrieval Look into std::promise semantics to understand it.   <a href="classfsdk_1_1_promise.html#details">More...</a></p>
<p><code>#include &lt;<a class="el" href="_future_8h_source.html">Future.h</a>&gt;</code></p><div class="dynheader">Inheritance diagram for fsdk::Promise&lt; T &gt;:</div><div class="dyncontent"> <div class="center">  <img src="classfsdk_1_1_promise.png" usemap="#fsdk::Promise&lt; T &gt;_map" alt=""/>  <map id="fsdk::Promise&lt; T &gt;_map" name="fsdk::Promise&lt; T &gt;_map"><area href="classfsdk_1_1_noncopyable.html" title="Helper class to block copy operator&amp;constructor of its descendants. " alt="fsdk::Noncopyable" shape="rect" coords="0,0,117,24"/></map> </div></div><table class="memberdecls"><tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-types"></a>Public Types</h2></td></tr><tr class="memitem:ae3660c93bae2da9120c11546f132a87e"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="ae3660c93bae2da9120c11546f132a87e"></a>using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#ae3660c93bae2da9120c11546f132a87e">Error</a> = <a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">PromiseError</a></td></tr><tr class="memdesc:ae3660c93bae2da9120c11546f132a87e"><td class="mdescLeft">&#160;</td><td class="mdescRight">Alias for associated error type. <br/></td></tr><tr class="separator:ae3660c93bae2da9120c11546f132a87e"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:a289da90b035b98d71ff87b366523d970"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a289da90b035b98d71ff87b366523d970"></a>using&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#a289da90b035b98d71ff87b366523d970">DataType</a> = T</td></tr><tr class="memdesc:a289da90b035b98d71ff87b366523d970"><td class="mdescLeft">&#160;</td><td class="mdescRight">Alias for stored data type. <br/></td></tr><tr class="separator:a289da90b035b98d71ff87b366523d970"><td class="memSeparator" colspan="2">&#160;</td></tr></table><table class="memberdecls"><tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-methods"></a>Public Member Functions</h2></td></tr><tr class="memitem:a26f2ff77af845a32921508ac26184217"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a26f2ff77af845a32921508ac26184217"></a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#a26f2ff77af845a32921508ac26184217">Promise</a> () noexcept</td></tr><tr class="memdesc:a26f2ff77af845a32921508ac26184217"><td class="mdescLeft">&#160;</td><td class="mdescRight">Constructor for empty <a class="el" href="classfsdk_1_1_promise.html" title="Promise class to support asynchronous data retrieval Look into std::promise semantics to understand i...">Promise</a>. <br/></td></tr><tr class="separator:a26f2ff77af845a32921508ac26184217"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:a11a4723bb75f234e2e281f8d0c6177b1"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a11a4723bb75f234e2e281f8d0c6177b1"></a>&#160;</td><td class="memItemRight" valign="bottom"><b>Promise</b> (<a class="el" href="classfsdk_1_1_promise.html">Promise</a> &amp;&amp;) noexcept</td></tr><tr class="separator:a11a4723bb75f234e2e281f8d0c6177b1"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:a22617556e5adc142030df7ef45e829d4"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a22617556e5adc142030df7ef45e829d4"></a><a class="el" href="classfsdk_1_1_promise.html">Promise</a> &amp;&#160;</td><td class="memItemRight" valign="bottom"><b>operator=</b> (<a class="el" href="classfsdk_1_1_promise.html">Promise</a> &amp;&amp;) noexcept</td></tr><tr class="separator:a22617556e5adc142030df7ef45e829d4"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:a7a178efaed788e336ed5305580737e4a"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt; <a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#a7a178efaed788e336ed5305580737e4a">cancel</a> () noexcept</td></tr><tr class="memdesc:a7a178efaed788e336ed5305580737e4a"><td class="mdescLeft">&#160;</td><td class="mdescRight">Cancel method. Think of it as acceptance of cancel requested by.  <a href="#a7a178efaed788e336ed5305580737e4a">More...</a><br/></td></tr><tr class="separator:a7a178efaed788e336ed5305580737e4a"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:a0c73e4d84c3e6487d5a7e1f7b0c13ba0"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt; <a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#a0c73e4d84c3e6487d5a7e1f7b0c13ba0">fail</a> () noexcept</td></tr><tr class="memdesc:a0c73e4d84c3e6487d5a7e1f7b0c13ba0"><td class="mdescLeft">&#160;</td><td class="mdescRight">Fail method. Think of it as valid failure to run some promised function. Only makes sense if underlying state is Promised.  <a href="#a0c73e4d84c3e6487d5a7e1f7b0c13ba0">More...</a><br/></td></tr><tr class="separator:a0c73e4d84c3e6487d5a7e1f7b0c13ba0"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:a379829f59f04b7694423b3e82d501766"><td class="memItemLeft" align="right" valign="top"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt; <a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#a379829f59f04b7694423b3e82d501766">fulfill</a> (<a class="el" href="classfsdk_1_1_promise.html#a289da90b035b98d71ff87b366523d970">DataType</a> &amp;&amp;promisedData) noexcept</td></tr><tr class="memdesc:a379829f59f04b7694423b3e82d501766"><td class="mdescLeft">&#160;</td><td class="mdescRight">Fulfill promise with data. Only makes sense if underlying state is Promised.  <a href="#a379829f59f04b7694423b3e82d501766">More...</a><br/></td></tr><tr class="separator:a379829f59f04b7694423b3e82d501766"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:accb944e8905435482b8604dfb805d690"><td class="memItemLeft" align="right" valign="top"><a class="el" href="classfsdk_1_1_future.html">Future</a>&lt; <a class="el" href="classfsdk_1_1_promise.html#a289da90b035b98d71ff87b366523d970">DataType</a> &gt;&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#accb944e8905435482b8604dfb805d690">future</a> (<a class="el" href="structfsdk_1_1_result.html">Result</a>&lt; <a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a> &gt; &amp;error) noexcept</td></tr><tr class="memdesc:accb944e8905435482b8604dfb805d690"><td class="mdescLeft">&#160;</td><td class="mdescRight">Create tethered future object. Only makes sense if underlying state is Empty.  <a href="#accb944e8905435482b8604dfb805d690">More...</a><br/></td></tr><tr class="separator:accb944e8905435482b8604dfb805d690"><td class="memSeparator" colspan="2">&#160;</td></tr><tr class="memitem:acb099562ad549c712fcdca295b379f5d"><td class="memItemLeft" align="right" valign="top"><a class="el" href="namespacefsdk.html#a48fe9106b62424a924a260074cd2c82b">FuturePromiseState</a>&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#acb099562ad549c712fcdca295b379f5d">state</a> () const noexcept</td></tr><tr class="memdesc:acb099562ad549c712fcdca295b379f5d"><td class="mdescLeft">&#160;</td><td class="mdescRight">Returns current state of future-promise pair.  <a href="#acb099562ad549c712fcdca295b379f5d">More...</a><br/></td></tr><tr class="separator:acb099562ad549c712fcdca295b379f5d"><td class="memSeparator" colspan="2">&#160;</td></tr></table><table class="memberdecls"><tr class="heading"><td colspan="2"><h2 class="groupheader"><a name="pub-static-methods"></a>Static Public Member Functions</h2></td></tr><tr class="memitem:a9b3e58dc95742108177ca25db4a933eb"><td class="memItemLeft" align="right" valign="top"><a class="anchor" id="a9b3e58dc95742108177ca25db4a933eb"></a>static void&#160;</td><td class="memItemRight" valign="bottom"><a class="el" href="classfsdk_1_1_promise.html#a9b3e58dc95742108177ca25db4a933eb">swap</a> (<a class="el" href="classfsdk_1_1_promise.html">Promise</a> &amp;first, <a class="el" href="classfsdk_1_1_promise.html">Promise</a> &amp;second) noexcept</td></tr><tr class="memdesc:a9b3e58dc95742108177ca25db4a933eb"><td class="mdescLeft">&#160;</td><td class="mdescRight">Static method that swaps internal data between two passed promises. <br/></td></tr><tr class="separator:a9b3e58dc95742108177ca25db4a933eb"><td class="memSeparator" colspan="2">&#160;</td></tr></table><a name="details" id="details"></a><h2 class="groupheader">Detailed Description</h2><div class="textblock"><h3>template&lt;typename T&gt;<br/>class fsdk::Promise&lt; T &gt;</h3>
<p><a class="el" href="classfsdk_1_1_promise.html" title="Promise class to support asynchronous data retrieval Look into std::promise semantics to understand i...">Promise</a> class to support asynchronous data retrieval Look into std::promise semantics to understand it. </p><dl class="section note"><dt>Note</dt><dd>Is not instantiable using this header only. </dd></dl><dl class="tparams"><dt>Template Parameters</dt><dd>  <table class="tparams">    <tr><td class="paramname">T</td><td>data type to store. </td></tr>  </table>  </dd></dl></div><h2 class="groupheader">Member Function Documentation</h2><a class="anchor" id="a7a178efaed788e336ed5305580737e4a"></a><div class="memitem"><div class="memproto"><div class="memtemplate">template&lt;typename T &gt; </div><table class="mlabels">  <tr>  <td class="mlabels-left">      <table class="memname">        <tr>          <td class="memname"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt;<a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a>&gt; <a class="el" href="classfsdk_1_1_promise.html">fsdk::Promise</a>&lt; T &gt;::cancel </td>          <td>(</td>          <td class="paramname"></td><td>)</td>          <td></td>        </tr>      </table>  </td>  <td class="mlabels-right"><span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>  </tr></table></div><div class="memdoc">
<p>Cancel method. Think of it as acceptance of cancel requested by. </p><dl class="section see"><dt>See Also</dt><dd><a class="el" href="classfsdk_1_1_future.html#aaaed4d6e1ad65c21ac4ac4e547e93f53" title="Cancel method. Might be called on some heavy long running task that is not needed anymore...">Future::cancel</a>. Only makes sense if underlying <a class="el" href="classfsdk_1_1_promise.html#acb099562ad549c712fcdca295b379f5d" title="Returns current state of future-promise pair. ">state</a> is <a class="el" href="namespacefsdk.html#a48fe9106b62424a924a260074cd2c82badc5498d31e5fd9e499391ff2b26bfff8" title="State possible if. ">CancelRequested</a>. </dd></dl><dl class="section return"><dt>Returns</dt><dd><a class="el" href="structfsdk_1_1_result.html" title="A structure that encapsulates an action result enumeration. ">Result</a> type containing </dd></dl><dl class="section see"><dt>See Also</dt><dd><a class="el" href="classfsdk_1_1_promise.html#ae3660c93bae2da9120c11546f132a87e" title="Alias for associated error type. ">Error</a> code. </dd></dl>
</div></div><a class="anchor" id="a0c73e4d84c3e6487d5a7e1f7b0c13ba0"></a><div class="memitem"><div class="memproto"><div class="memtemplate">template&lt;typename T &gt; </div><table class="mlabels">  <tr>  <td class="mlabels-left">      <table class="memname">        <tr>          <td class="memname"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt;<a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a>&gt; <a class="el" href="classfsdk_1_1_promise.html">fsdk::Promise</a>&lt; T &gt;::fail </td>          <td>(</td>          <td class="paramname"></td><td>)</td>          <td></td>        </tr>      </table>  </td>  <td class="mlabels-right"><span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>  </tr></table></div><div class="memdoc">
<p>Fail method. Think of it as valid failure to run some promised function. Only makes sense if underlying state is Promised. </p><dl class="section return"><dt>Returns</dt><dd><a class="el" href="structfsdk_1_1_result.html" title="A structure that encapsulates an action result enumeration. ">Result</a> type containing </dd></dl><dl class="section see"><dt>See Also</dt><dd><a class="el" href="classfsdk_1_1_promise.html#ae3660c93bae2da9120c11546f132a87e" title="Alias for associated error type. ">Error</a> code. </dd></dl>
</div></div><a class="anchor" id="a379829f59f04b7694423b3e82d501766"></a><div class="memitem"><div class="memproto"><div class="memtemplate">template&lt;typename T &gt; </div><table class="mlabels">  <tr>  <td class="mlabels-left">      <table class="memname">        <tr>          <td class="memname"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt;<a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a>&gt; <a class="el" href="classfsdk_1_1_promise.html">fsdk::Promise</a>&lt; T &gt;::fulfill </td>          <td>(</td>          <td class="paramtype"><a class="el" href="classfsdk_1_1_promise.html#a289da90b035b98d71ff87b366523d970">DataType</a> &amp;&amp;&#160;</td>          <td class="paramname"><em>promisedData</em></td><td>)</td>          <td></td>        </tr>      </table>  </td>  <td class="mlabels-right"><span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>  </tr></table></div><div class="memdoc">
<p>Fulfill promise with data. Only makes sense if underlying state is Promised. </p><dl class="params"><dt>Parameters</dt><dd>  <table class="params">    <tr><td class="paramname">promisedData</td><td>Rvalue reference to promised data. </td></tr>  </table>  </dd></dl><dl class="section return"><dt>Returns</dt><dd><a class="el" href="structfsdk_1_1_result.html" title="A structure that encapsulates an action result enumeration. ">Result</a> type containing </dd></dl><dl class="section see"><dt>See Also</dt><dd><a class="el" href="classfsdk_1_1_promise.html#ae3660c93bae2da9120c11546f132a87e" title="Alias for associated error type. ">Error</a> code. </dd></dl>
</div></div><a class="anchor" id="accb944e8905435482b8604dfb805d690"></a><div class="memitem"><div class="memproto"><div class="memtemplate">template&lt;typename T &gt; </div><table class="mlabels">  <tr>  <td class="mlabels-left">      <table class="memname">        <tr>          <td class="memname"><a class="el" href="classfsdk_1_1_future.html">Future</a>&lt;<a class="el" href="classfsdk_1_1_promise.html#a289da90b035b98d71ff87b366523d970">DataType</a>&gt; <a class="el" href="classfsdk_1_1_promise.html">fsdk::Promise</a>&lt; T &gt;::future </td>          <td>(</td>          <td class="paramtype"><a class="el" href="structfsdk_1_1_result.html">Result</a>&lt; <a class="el" href="namespacefsdk.html#a4d0fbacdb0e56a6f79c2eb3e276c4e83">Error</a> &gt; &amp;&#160;</td>          <td class="paramname"><em>error</em></td><td>)</td>          <td></td>        </tr>      </table>  </td>  <td class="mlabels-right"><span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>  </tr></table></div><div class="memdoc">
<p>Create tethered future object. Only makes sense if underlying state is Empty. </p><dl class="params"><dt>Parameters</dt><dd>  <table class="params">    <tr><td class="paramname">error</td><td>Reference to error object to indicate of failure </td></tr>  </table>  </dd></dl><dl class="section return"><dt>Returns</dt><dd><a class="el" href="classfsdk_1_1_future.html" title="Future class to support asynchronous data retrieval Look into std::future semantics to understand it...">Future</a> object tethered to this promise. </dd></dl>
</div></div><a class="anchor" id="acb099562ad549c712fcdca295b379f5d"></a><div class="memitem"><div class="memproto"><div class="memtemplate">template&lt;typename T &gt; </div><table class="mlabels">  <tr>  <td class="mlabels-left">      <table class="memname">        <tr>          <td class="memname"><a class="el" href="namespacefsdk.html#a48fe9106b62424a924a260074cd2c82b">FuturePromiseState</a> <a class="el" href="classfsdk_1_1_promise.html">fsdk::Promise</a>&lt; T &gt;::state </td>          <td>(</td>          <td class="paramname"></td><td>)</td>          <td> const</td>        </tr>      </table>  </td>  <td class="mlabels-right"><span class="mlabels"><span class="mlabel">noexcept</span></span>  </td>  </tr></table></div><div class="memdoc">
<p>Returns current state of future-promise pair. </p><dl class="section return"><dt>Returns</dt><dd>Current state </dd></dl><dl class="section see"><dt>See Also</dt><dd><a class="el" href="namespacefsdk.html#a48fe9106b62424a924a260074cd2c82b" title="Enumeration of possible future or promise states. ">FuturePromiseState</a>. </dd></dl>
</div></div><hr/>The documentation for this class was generated from the following file:<ul><li>include/fsdk/Types/<a class="el" href="_future_8h_source.html">Future.h</a></li></ul></div><!-- contents --></div><!-- doc-content --><!-- start footer part --><div id="nav-path" class="navpath"><!-- id is needed for treeview function! -->  <ul>    <li class="navelem"><a class="el" href="namespacefsdk.html">fsdk</a></li><li class="navelem"><a class="el" href="classfsdk_1_1_promise.html">Promise</a></li>    <li class="footer">Generated on Fri Jun 17 2022 12:19:44 for Face Engine SDK by    <a href="http://www.doxygen.org/index.html">    <img class="footer" src="doxygen.png" alt="doxygen"/></a> 1.8.5 </li>  </ul></div></body></html>