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From: Florian Weimer <fw@deneb.enyo.de>
Newsgroups: comp.lang.ada
Subject: Re: List Container Strawman 1.4
Date: Sun, 16 Dec 2001 00:19:47 +0100
Organization: Enyo's not your organization
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Date: 2001-12-16T00:19:47+01:00
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Ted Dennison<dennison@telepath.com> writes:

> I have posted a strawman version 1.4 of the standard Ada List container at
> http://www.telepath.com/dennison/Ted/Containers-Lists-Unbounded.ads.html . 


   -- List <---> Unconstrained array conversions.

   type Element_Array is array (Natural range <>) of Element;

   function To   (Source : Element_Array) return List;
   function From (Source : List) return Element_Array;

What about a generic version of To and From which can handle arrays
with different index types?

   -- Passive iterator. Operation will be applied on each element on the list
   -- Opertion can terminate this process early by setting Quit to True.

   generic
      with procedure Operation (Target : in out Element; Quit : out Boolean);
   procedure Passive_Iterator (Target : in out List);


I'd like to suggest to make Quit mode "in out", with a default of
False.

   -- Sorting sub-package.
   -- To sort in increasing order, use the ">" routine for the Reverse_Order
   -- parameter. To sort in decreasing order, substitute your "<" routine for
   -- the Reverse_Order parameter. :-)

I think the Reverse_Order predicate should be named differently, so
that it's clear from its name that it's a predicate.  "Reverse_Order"
could also mean "Reverse the order of the elments.", not just "Are
these elements in reversed order?".