What is “_,” (underscore comma) in a Go declaration?

Question

And I can\'t seem to understand this kind of variable declaration:

_, prs := m[\"example\"]

What exactly is \"_,\" doing and w

Answer 1

The Go compiler won't allow you to create variables that you never use.

for i, value := range x {
   total += value
}

The above code will return an error message "i declared and not used".

Since we don't use i inside of our loop we need to change it to this:

for _, value := range x {
   total += value
}