Sometimes you have two collections and want to know how they differ. It would also be useful to have a series of steps that transform collection ‘A’ into collection ‘B’ (or the reverse).
private static List list1 = Arrays.asList("a", "b", "c"); private static List list2 = Arrays.asList("a", "c", "d"); // Diff of list1 vs list2: // removed 'b' at 1 // added 'd' at 2
With a little help from the class Diffs (found in the org.eclipse.core.databinding.observable bundle / package), it only takes a few lines, as shown in the snippet below. Thank you, Eclipse Databinding!
If you don’t see the snippet click here.