. Here, such cases are not viewed as "add new elements". In fact, slice lengths can also be modified separately by calling the <code class="tmd-code-span">reflect.SetLen</code> function. Increase the length of a slice by this way is kind of adding new elements into the slice. But the <code class="tmd-code-span">reflect.SetLen</code> function is slow, so it is rarely used.<br/><sup>(4)</sup> For buffered channels which are still not full.
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<h3 id="composite-literals-types" class="tmd-header-3">