Returns the last element of sequence.
If the sequence is empty, then the behavior of last depends on whether it was called with a default argument. If the default argument was supplied, its value is returned; otherwise, an error is signaled.
last (#("emperor", "of", "china"))
⇒ "china"open
| sequence | An instance of <sequence>. |
| default: | An instance of <object>. The default is #f. |
| val | An instance of <object>. |