Too Many Arguments in Function Call

Why This Happens

Go enforces strict argument counts at compile time. If a function takes two parameters and you pass three, the compiler rejects it. This commonly happens after refactoring a function signature without updating all call sites.

The Problem

func add(a, b int) int {
    return a + b
}

func main() {
    result := add(1, 2, 3) // too many arguments
    fmt.Println(result)
}

The Fix

func add(a, b int) int {
    return a + b
}

func main() {
    result := add(1, 2)
    fmt.Println(result)
}

Step-by-Step Fix

1. 1

   Identify the function

   Read the error to find which function has too many arguments.

2. 2

   Check the signature

   Look at the function definition to see how many parameters it expects.

3. 3

   Fix the call site

   Remove extra arguments or update the function signature to accept variadic arguments if needed.