Slick Forums

Hi all,
Just wanna ask how to loop through the ImmutableBag.

right now im using

but im having null result for the entity.

Best regards

Iterating an array is straight forward using a for loop, like you do, although I usually iterate by doing:
for(int i = 0; bag.size() > i; i++) {
...
}
But your way works too.

I need more information to answer you about the NPE.

By the looks of it, you are starting beyond the end of the bag. Let's say the size of the ImmutableBag is 3. You should only be indexing from 0 through 2. The code above starts with a counter value of 3.

--tim

Exactly. Also, if you want a literal java iteration with Iterable, you might want to implement the Iterable interface.

Yeah, would be awesome to being able to iterate like that:

Yes, I was looking at this as well.

The ImmutableBag should be extending Iterable like other collections.

I guess the knock on affect would mean that each concrete instance which uses it would need an iterator implementation. But it'll allow for the use of enhanced loops.