For both functions, the result is independent of whether the memory referenced
by the arguments overlaps.
</p>

<p>
The <a href="#Function_types">variadic</a> function <code>append</code>
appends zero or more values <code>x</code> to a slice <code>s</code>
and returns the resulting slice of the same type as <code>s</code>.
The <a href="#Core_types">core type</a> of <code>s</code> must be a slice