Go — declared and not used error, when I think I have done so to the variable

Question

What\'s wrong with this code?

package main

import \"fmt\"

// fibonacci is a function that returns
// a function that returns an int.
func fibonacci() func(         


        

Answer 1

You declared a variable named prev and then never used it.

Specifically, you said prev := temp. This is creating a new local variable in the current scope named prev. I assume you meant to just say prev = temp, which modifies the prev variable inherited from the surrounding scope. Similarly you probably meant to say curr = curr + prev on the previous line, instead of using :=.