[Oorexx-rfes] [ oorexx-Feature Requests-1754742 ] Collections # 2: Please consider default implementation of s

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Feature Requests item #1754742, was opened at 2007-07-16 07:11
Message generated for change (Settings changed) made by wdashley
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https://sourceforge.net/tracker/?func=detail&atid=684733&aid=1754742&group_id=119701

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Category: None
Group: v3.2.0
>Status: Closed
Resolution: Accepted
Priority: 5
Private: No
Submitted By: Rony G. Flatscher (orexx)
Assigned to: Rony G. Flatscher (orexx)
Summary: Collections # 2: Please consider default implementation of s

Initial Comment:
It would be conceivable to supply a default implementation for the methods "allIndexes", "allItems", "hasIndex", "hasItem", "items" and "makeArray" in the class "Collection". If so, then "makeArray" needs to be implemented for the "OrderedCollection" class as well (returning "allItems').

Doing so would allow anyone who defines a collection class to merely implement the methods "at", "[]", "put", "[]=", "supplier". If performance is important, then the default implementations could be overridden.

These would be the suggested default implementations, which could be overridden in subclasses:


ad Class "Collection":
----------------------

::method "allIndexes"   /* return an "allIndexes" array */
  return self~supplier~allIndexes

::method "allItems"     /* return an "allItems" array   */
  return self~supplier~allItems

::method "hasIndex"
  use strict arg index
  return self~supplier~allIndexes~hasItem(index)

::method "hasItem"
  use strict arg item
  return self~supplier~allItems~hasItem(item)

::method items
  return self~supplier~allIndexes~items

::method makeArray      /* return index array           */
  return self~supplier~allIndexes


ad Class "OrderedCollection":
-----------------------------

::method makeArray      /* return item array            */
  return self~supplier~allItems


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Comment By: Rick McGuire (bigrixx)
Date: 2007-07-19 07:14

Message:
Logged In: YES 
user_id=1125291
Originator: NO

This RFE has been examined, and has been determined to be inline with
the goals of the ooRexx language.  This is not a commitment that this
feature will be implemented, but this will remain open until someone in
the ooRexx community chooses to implement the feature.

Any committer who wishes to work on this feature should assign the
feature to themselves when they begin.  Any non-committer who wishes to
work on this should indicate their interest by adding a comment to the
RFE.

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You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=684733&aid=1754742&group_id=119701