Re: Array iterator factory

[tlm]

in reply to Array iterator factory

Just a minor point: using a (\@) prototype in the definition of array_iterator, as opposed to just using @_, rules out uses like array_iterator(1..10). Is there a particular benefit of using a prototype here that you are after?

[Roy Johnson]

If I took a list, I'd have to make and store a copy of its contents. It would be expensive, and it would not see subsequent changes to the original array. I wanted a lightweight iterator tied to a user-modifiable array.

The user can create an anonymous array and slap an iterator on it, if he so desires: array_iterator(@{[1..10]}). That makes it obvious that this iterator can't give you the free lunch that for (1..10) does.

[tye]

Don't forget the power of &array_iterator([1..10]).

[Roy Johnson]

I'm sorry, Tye, I may be a little dopey this evening. What point are you making?

Update: Ah, it's related to ihb's post. Using & to call functions bypasses prototypes.