How to find the difference of two slices in Golang?

Question

go

Suppose I have two slices:
slice1 := []string{"123", "12", "13"}
slice2 := []string{"123, "12, "13", "23}
I need to compare get them and the extra value that is not in the other one (the values ​​inside can be in any order).
And I will always know exactly which of the slices will be larger.
In python, I would just make two sets and subtract the other from one)
But here, my powers cannot come up with a normal algorithm (and I tried a lot)....

Answer 1

If you still need to find the difference of the sets (that is, without binding the elements to their positions), then you need to do something like this https://play.golang.org/p/EWsmVji_3aA
If you do as Pardon Me suggests! Where Do I Find 4giveness? , then your result will "crawl" after the first "extra" like this: https://play.golang.org/p/pNVboCOaU__Q

Answer 2

If the arrays are not large, then make a map and count the occurrences.