Erik Price <[EMAIL PROTECTED]> writes:
| Man! And I thought one of the nice things about Perl was you didn't
| have to use an Iterator to traverse a List!
|
| Iterator it = myList.iterator();
| while (it.hasNext()) {
| MyObject mo = (MyObject)it.next();
| // do something with mo
| }
|
| (In all honesty, I really do think [Java/Python-style] iterators are
| cool, for situations that need them. But it's admittedly more work
| than using a counter variable, so when you want to bang out some quick
| Perl, it's nice not to have to bother with it.)
In Python, the iterator construction and traversal are automatically
performed for you when you use for...in, so the following works:
for mo in myList:
# do something with mo
provided that myList's class defines an __iter__ method that returns
an iterator object, and that that iterator defines a next() method.
--
http://www.dfan.org
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