[Oorexx-rfes] [ oorexx-Feature Requests-1734213 ] Please allow argument on Collection classes 'NEW'

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Feature Requests item #1734213, was opened at 2007-06-09 17:27
Message generated for change (Comment added) made by bigrixx
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Category: Classes
Group: Next Release
>Status: Pending
>Resolution: Rejected
Priority: 5
Private: No
Submitted By: Rony G. Flatscher (orexx)
Assigned to: Nobody/Anonymous (nobody)
Summary: Please allow argument on Collection classes 'NEW' 

Initial Comment:
Working with the new features of the collection classes and experimenting with putAll and a supplier the utility of creating different collection class renderings can be enhanced, if the 'NEW' method of the collection classes accepted an optional argument, either a collection or a supplier (and in the case of ordered or set collections any object that possesses a MAKEARRAY method).

The generic INIT-code for the collection classes could look like:

------------ cut here ------------
   ::METHOD INIT
     use strict arg initialItems=.nil

     if arg(1, "E") then
     do
        if self~isA(.OrderedCollection) then
           self~appendAll(initialItems)  
        else
           self~putAll(initialItems)       
     end
------------ cut here ------------

This would ease coding for the purpose of rendering a collection or supplier to a specific collection at creation time. E.g.


   m=.array~methods    /* get a supplier */
   r=.relation~new(m)  /* create a relation, add the supplier index/item pairs to it */


Alternatively (already possible) one could code the same as:

   m=.array~methods    /* get a supplier */
   r=.relation~new     /* create a relation */
   r~putAll(m)         /* add the supplier index/item pairs to it */




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>Comment By: Rick McGuire (bigrixx)
Date: 2007-06-12 11:12

Message:
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Originator: NO

This is not a good idea, as it will make it difficult and awkward to
extend the new method to add additional options to the collections in the
future.  For example, adding initial capacity and expansion strategy
options to table, et al would be a good future enhancement.  This feature
overlaps with function already available to the particular collections, so
it doesn't really add any capability while at the same time creates
additional complications for the future. 

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