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Re: Array iterator factory

by tlm (Prior)
on Mar 16, 2005 at 18:54 UTC ( #440091=note: print w/ replies, xml ) Need Help??

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?

the lowliest monk

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Re^2: Array iterator factory
by Roy Johnson (Monsignor) on Mar 16, 2005 at 19:30 UTC
    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.

    Caution: Contents may have been coded under pressure.

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

      - tye        

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