Difference betwen Visitor pattern & Double Dispatch

Question

I am reading about visitor pattern, and it appears the same like Double Dispatch. Is there any difference between the two. Do the two terms means the same thing.

re

Answer 1

From Wikipedia:

the visitor pattern simulates double dispatch in a conventional single-dispatch object-oriented language such as Java, Smalltalk, and C++.

Also from Wikipedia:

The problem described above can be resolved by simulating double dispatch, for example by using a visitor pattern.