Check whether a string slice contains a certain value in Go

Question

What is the best way to check whether a certain value is in a string slice? I would use a Set in other languages, but Go doesn\'t have one.

My best try is this so far:

Answer 1

To replace sets you should use a map[string]struct{}. This is efficient and considered idiomatic, the "values" take absolutely no space.

Initialize the set:

set := make(map[string]struct{})

Put an item :

set["item"]=struct{}{}

Check whether an item is present:

_, isPresent := set["item"]

Remove an item:

delete(set, "item")