merge example

[psytron]

It would be fantastic to add some example code on merge method. All the examples on stackoverflow are from v2 v3 they don't seem to work. The V4 handbook has 3 paragraphs about the merge method but somehow its hard to figure how to structure the code for it to work.

[eagle6211]

yes, the same feeling @psytron . so can the author give more examples about merge for beginner @technige