How is an Iterator much better?

Post #168,429 by bluke 8/10/04 9:53:44 AM Reply	How is an Iterator much better? You still need to write something like Iterator itr = col.iterator; while(itr.hasNext()) { ...do something } Lately I have seen a lot of the following where a for loop is used to iterate over a Collection, in fact, this is the code that Intellij generates to do that. I personally much prefer the while loop. for (Iterator iterator = collection.iterator(); iterator.hasNext();) { Object o = (Object) iterator.next(); \t\t\t \t\t} besides in a good IDE like Intellij it writes the for loop for you
Post #168,431 by admin 8/10/04 9:57:44 AM Reply	Re: How is an Iterator much better? Personal preference, I guess. I use the for style of iteration. I prefer Python's "for foo in bar:" syntax over everything else. :-) Regards, -scott anderson "Welcome to Rivendell, Mr. Anderson..."
Post #168,434 by bluke 8/10/04 10:03:27 AM Reply	That is coming to Java in 1.5 you will ge able to write something like this: List<String> names = new ArrayList<String>(); ... for (String name: names) { ... do something }
Post #168,516 by admin 8/10/04 6:59:14 PM Reply	Oh, joy -- looks like the STL. They won't rest until they've remade Java back into C++. Regards, -scott anderson "Welcome to Rivendell, Mr. Anderson..."
Post #168,517 by FuManChu 8/10/04 7:38:36 PM Reply	Dang. Now I've got a WSOD. while milk:\n screen.append(milk.pop()) "Despite the seemingly endless necessity for doing so, it's actually not possible to reverse-engineer intended invariants from staring at thousands of lines of code (not in C, and not in Python code either)." Tim Peters on python-dev
Post #168,519 by inthane-chan 8/10/04 7:56:50 PM Reply	ICMLPRD Dang. Now I've got a WSOD. while milk:\n screen.append(milk.pop()) WANTED: Precognitive Telepath for adventuring Partnership. You know where to apply.
Post #168,521 by inthane-chan 8/10/04 7:57:53 PM Reply	ICMLPRD (new thread) Created as new thread #168520 titled [link\|/forums/render/content/show?contentid=168520\|ICMLPRD] WANTED: Precognitive Telepath for adventuring Partnership. You know where to apply.
Post #168,567 by bluke 8/11/04 3:40:15 AM Reply	It's not so bad Most people will just use it to define collections of a given type. Unfortunately they are very conservative and what they did is a bandaid. It is basically compiler magic, the generic type is erased and the compiler inserts the casts. In addition they came up with another bandaid for the primitive type problem, autoboxing, which is quite problematic. It is interesting to note that even the spec leads have come around to teh view that primitive types are an issue.

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