>> Often, an abstraction doesn’t truly hide the data structures underneath, but it is bound by the limitations of the initial data structure(s) used to implemen

>> Often, an abstraction doesn’t truly hide the data structures underneath, but it is bound by the limitations of the initial data structure(s) used to implement it. You want to refactor and use a new data structure? Chances are you need a new abstraction. Data structures are abstractions :-)