On Tue, Jan 1, 2013 at 8:30 PM, Leslie Turriff <jlturr...@centurytel.net>wrote:
> I'm reading the Programming Guide, trying to get a grip on the > allowed > attributes for the indices of each type of collection. > The Programming Guide says, "Each item stored in a > Rexx collection has an associated index that you can use to retrieve the > item > from the collection with the AT or [] (left and right bracket) methods, and > each collection deļ¬nes its own acceptable index types:". It goes on to > describe the indexes for each collection type, but some of them are rather > vague: > "Array A sequenced collection of objects ordered by whole-number > indexes." > > Okay, that's clear enough... > > "List A sequenced collection that lets you add new items at > any position > in the sequence. A list generates and returns an index value for each item > placed in the list. The returned index remains valid until the item is > removed from the list." > > Hmmm...so is a list index allowed to be an integer? A real number? > Non-numeric? > Help! > >From the documentation of the list class: The List creates a new index value whenever an item is added to the list and the associated index value remains valid for that item regardless of other additions or removals. Only indexes the list object generates are valid i.e. the list is never a sparse list and the list object will not modify indexes for items in the list. Draft Whenever an item is inserted into the list, an index is assigned to that value. This index will remain valid for that item regardless of any other insertions or deletions that may occur with the list. Rick > > Leslie > > > ------------------------------------------------------------------------------ > Master Java SE, Java EE, Eclipse, Spring, Hibernate, JavaScript, jQuery > and much more. Keep your Java skills current with LearnJavaNow - > 200+ hours of step-by-step video tutorials by Java experts. > SALE $49.99 this month only -- learn more at: > http://p.sf.net/sfu/learnmore_122612 > _______________________________________________ > Oorexx-users mailing list > Oorexx-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/oorexx-users >
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