[Go] Alternatives to functional overloading.

package main

import (
    "log"
)

func add(a float64, b float64) float64 {
    return a + b
}

func addOne(a float64) float64 {
    return add(a, 1)
}

func main() {
    if !(addOne(3) == 4) {
        log.Fatal("Wrong value")
    }
}