Andrei Alexandrescu wrote:
[snip]
I like the idea of lazy evaluation; heck, I toyed around with stack
threads so I could write generators.
Also, lazy evaluation has the risk of getting confusing as there's a lot
of escaping. Consider:
int[] arr = [ 1, 2, 3, 4 ];
auto squares = map!("a * a")(arr);
arr[] = [ 5, 6, 7, 8 ];
Now iterating squares will see different numbers than the original ones.
Please let me know what you think!
Andrei
Maybe map should only take invariant data; that way, it's fairly obvious
to the user that you need to pass a block of data that isn't going to be
changed under the map's feet.
-- Daniel
