[GitHub] markusthoemmes commented on issue #3220: Move log message into a closure to defer string interpolation.

[GitBox]

markusthoemmes commented on issue #3220: Move log message into a closure to 
defer string interpolation.
URL: 
https://github.com/apache/incubator-openwhisk/pull/3220#issuecomment-360600614
 
 
   Easier as I thought it will be. For those curious if this really defers even 
the interpolation:
   
   ```scala
   object Test {
     def main(args: Array[String]): Unit = {
       def test(arg: => String, print: Boolean): Unit = {
         if (print) println(arg) else ()
       }
   
       var i = 0
       test(s"${i += 1}", false)
       test(s"${i += 1}", true)
       println(i) // prints 1
     }
   }
   ```

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