package main

import (
    "fmt"
    "math"
)

func cappedPow(x, n, lim float64) float64 {
    // executing a short statement before the
    // actual condition occurs.
    if v := math.Pow(x, n); v < lim {
        return v
    }

    return lim
}

func main() {
    fmt.Println(
        cappedPow(3, 2, 10),
        // also notice this damned trailing comma
        // at the end of a "list"
        cappedPow(3, 3, 20),
    )
}