> From my perspective, Go added methods primarily so that you can use them in combination with interfaces.
They also give you a limited form of overloading. Without methods or overloading, you end up in the situation that C and Scheme are in where every operation on a data structure has to redundantly have the data structure in its name like:
list_clear(my_list);
queue_clear(my_queue);
map_clear(my_map);
In Go you would methods for that: my_list.Clear(), my_queue.Clear() and my_map.Clear(). Now you can define a Clearer interface, which has only the Clear method. That allows you to write a function clearAndLog(item Clearer) and it will work with the list, queue and map.
> Without methods or overloading, you end up in the situation that C and Scheme are in
Well in C at least we now have this:
...although it turns out the other nice thing about methods is automatic namespacing.