ode</span> <span class="n">mode</span> <span class="o">=</span> <span class="n">mode</span><span class="o">::</span><span class="n">read</span><span class="p">)</span> <span class="k">noexcept</span><span class="p">;</span>
<span class="p">};</span>
</code></pre></div><a href="https://github.com/boostorg/outcome/tree/master/doc/src/snippets/constructors.cpp#L52" class="code-snippet-url" target="_blank">View this code on Github</a></div>


<p>Note the default member initialisers, these are particularly conve