That is only for the one line
getGlassOf(this.thirsty? water : null)
However, if you’d write out the
if (this.thirsty)
getGlassOf(water)
you wouldn’t need the empty one. On the other hand, thinking like a programmer you’d say it’s simpler to just bring two.
Is there an actual difference in process time between the two methods, Zach?