title: Go string interpolation
body: <p>Trying to interpolate an <code>int</code> value into a string using <code>%v</code> formatter as follows, yet nothing is printed,</p>
  
  <pre><code>package main
  
  import "fmt"
  
  func inc(i int) int {
    return i + 1
  }
  
  func main() {
    fmt.Sprintln("inc 1 equal %v", inc(1))
  }
  </code></pre>
  
  <p>How to interpolate an <code>int</code> value ?</p>