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override_outcome_exception.html

override_outcome_exception.html 2.9 KB
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  3. <title>void override_outcome_exception(basic_outcome&lt;T, EC, EP, NoValuePolicy&gt; *, U &amp;&amp;) noexcept - Boost.Outcome documentation</title>
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  13.   <div class="titlepage"><div><div><h1 style="clear: both"><code>void override_outcome_exception(basic_outcome&lt;T, EC, EP, NoValuePolicy&gt; *, U &amp;&amp;) noexcept</code></h1></div></div></div>
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  14.   <p>Overrides the exception to something other than what was constructed. You <em>almost certainly</em> never
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  15. want to use this function. A much better way of overriding the exception returned is to create
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  16. a custom no-value policy which lazily synthesises a custom exception object at the point of need.</p>
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  17. 

  18. <p>The only reason that this function exists is because some people have very corner case needs
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  19. where a custom no-value policy can&rsquo;t be used, and where move-constructing a new <code>outcome</code> from
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  20. an old <code>outcome</code> with the exception state replaced isn&rsquo;t possible (e.g. when the types are
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  21. non-copyable and non-moveable).</p>
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  22. 

  23. <p>Unless you are in a situation where no other viable alternative exists, do not use this function.</p>
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  24. 

  25. <p><em>Overridable</em>: Not overridable.</p>
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  26. 

  27. <p><em>Requires</em>: Nothing.</p>
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  28. 

  29. <p><em>Namespace</em>: <code>BOOST_OUTCOME_V2_NAMESPACE::hooks</code></p>
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  30. 

  31. <p><em>Header</em>: <code>&lt;boost/outcome/basic_outcome.hpp&gt;</code></p>
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  32. 

  33. 

  34.         </div><p><small>Last revised: January 30, 2019 at 16:16:10 UTC</small></p>
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