A tied array would require more infrastructure (i.e. it's more cumbersome to make, which is just MHO and an arguable point), and I don't see that creating a simple iterator is reinventing the wheel, especially seeing as how there's a pretty decent book out with chapters on this very thing. | [reply] |
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Henry Baker sees iterators as a potential sign of weakness...
The appearance of iterators in an object-oriented language appears to be inversely related to the power of the language's intrinsic control structures. Iterator classes are used for the sole purpose of enumerating the elements of an abstract collection class without revealing its implementation. We find that the availability of higher-order functions and function closures eliminates the need for these ad hoc iterator classes
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