On 03/11/2010 13:43, [email protected] wrote:
This seems perfectly intuitive to me.

When you delete an item, you are doing something entirely different than
just manipulating the contents of an item. In one case you reduce the number
of items. In the other you merely insert, or remove, data from them.
But manipulating the contents of an item does (can) change the number of items.
   put "a,b,c" into temp
   put temp && the number of items in temp
    ===>  a,b,c 3
   put empty into the last item of temp
   put temp && the number of items in temp
    ===>  a,b, 2

-- Alex.
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