Implement for-loop for arrays

[Per Östlund]

It would be nice to be able to loop over arrays in the bootstrapped compiler, similar to how it's possible to loop over lists. E.g.:

  array<T> someArray;
algorithm
  for e in someArray loop
    // Some code
  end for;

[Adrian Pop]

Also would be nice to have pattern matching on the array elements, not the entire array, i.e.

case (a[1] as "blah") then something;

[Martin Sjölund]

Replying to adrpo:

case (a[1] as "blah") then something;

Looks very bad. I read this as

match str
  case "blah"
    algorithm
      a[1] := "blah";
    then something;

[Per Östlund]

This is possible though:

_ := match(a[1])
  case "blah" then something;
end match;

[Martin Sjölund]

Fixed in r22702 (none of the pattern-matching on array elements as it should not be needed in the bootstrapped compiler).