title: How to initialize multi-dimensional array with different default value
body: <p>I am trying to initialize 2-dimensional array of integer values with -1. When I create a new array, it is automatically filled with 0. 
  I know I can do it with 2 for cycles, but I imagine there should be some way of doing this while the array is being build (so I don't have to go through it two times), so that instead of 0, provided value would be inserted. Is it possible? 
  If not during the initial building of the array, is there some other time or code saving way, or am I stuck with 2 for cycles?</p>