$Search: copy a slice
One option is to allocate a new slice of the same length as original slice and use copy()
:
https://codeeval.dev/gist/f3a8ca5000cc9bd46b77d9f2c0811eae
Another option is to append()
original slice to an empty slice:
https://codeeval.dev/gist/00a767c0bca43e59b6aa190771858224
Both versions are equally efficient.