replace
Replace all the elements of a DefineList.
    list.replace(collection)
  
  Replaces every item in the list with collection.
var names = new DefineList(["alice","adam","eve"]);
names.replace(["Justin","Xena"]);
names //-> DefineList["Justin","Xena"]
  
  Parameters
- collection 
{Array|can-define/list/list}:The collection of items that will be in
list. 
Use
replace is essentially a shortcut for splice.
Events
replace causes remove, add, and length events.