Intrinsics, std.bind problems, list comphrensions, recursivity test

[Henning Hasemann]

This is untested:

/**
 * Resembles pythons list comprehensions
 * Read as
 * returns *apply* applied to each *iter* in *collection* where *where*
 *
 * for example:
 *
 * int i;
 * select(toString(i), i, [1,2,3,4,5,6,7], i % 2 == 0)
 *
 * would return:
 * ["2", "4", "6"]
 */
R[] select(R, I, C)(lazy R apply, ref I iter, C collection, lazy bool
where) { R[] r;
  foreach(x; collection) {
    iter = x;
    if(where())
      r ~= apply();
  }
  return r;
}



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