Task

Show how to concatenate two arrays in your language.



If this is as simple as array1 + array2, so be it.




 
create a pair of arbitrary array: 
    a:=matrix(2,2,max) b:=a+3
 
    a=|0 1|   b=|3 4|
      |1 1|     |4 4|
 
concatentate them vertically:
                 |0 1|
    stack(a,b) = |1 1|
                 |3 4|
                 |4 4|
 
    augment(a,b) = |0 1 3 4|
                   |1 1 3 4|
 
 