Non-Boolean Used as Condition

Why This Happens

Go does not have truthy/falsy values like Python or JavaScript. Every condition in an if, for, or other control statement must be an explicit boolean expression. You cannot use an integer, string, or pointer directly as a condition.

The Problem

func main() {
    count := 5
    if count { // non-boolean condition
        fmt.Println("has items")
    }
}

The Fix

func main() {
    count := 5
    if count > 0 {
        fmt.Println("has items")
    }
}

Step-by-Step Fix

1. 1

   Identify the non-boolean

   Find the if condition that uses a non-boolean type.

2. 2

   Add a comparison

   Convert to an explicit boolean: count > 0, str != "", ptr != nil.

3. 3

   Check other conditions

   Review other conditions for similar non-boolean usage.