Function LinkedList.appendList
Append other list.
Note
Appended list should not be freed. It becomes part of this list.
Example
LinkedList!int list1;
scope(exit) list1 .free();
LinkedList!int list2;
LinkedList!int list3;
list2 .insertBack(1);
list2 .insertBack(2);
list1 .appendList(list2);
import std .algorithm : equal;
assert(equal(list1 .byElement(), [1,2]));
list3 .insertBack(3);
list3 .insertBack(4);
list1 .appendList(list3);
assert(equal(list1 .byElement(), [1,2,3,4]));