Hello Coin

[Francis ANDRE]

Hi Llewellyn


Le 20/11/2013 22:28, Llewellyn Falco a écrit :
> While these are interesting cases.
> Why should this be a language feature as opposed to a custom implementing class?
I do not catch you question. Could you be more explicit?
>
>
> On Wed, Nov 20, 2013 at 12:47 PM, Francis ANDRE 
> <francis.andre.kampbell at orange.fr <mailto:francis.andre.kampbell at orange.fr>> 
> wrote:
>
>     Hi Coin List
>
>     I did not receive any answer on my previous request which means certainly that
>     there is no more open call for proposals. Anyway, I will bring my 2 cents
>     to the
>     coin distributor!...
>
>
>     I would like Java to offer "true" array/arrays... And you would say: Hey guy,
>     what is a "true" array, Java gets already the array concept... Well, let me
>     explain a little bit. In java one declares an array of int for example as
>
>     int[] myInts;   // myInts, an array of int
>
>     and the allocation of the array by
>
>     myints = new array[10];   // myints is an array of 10 int
>     myints[0] = 90;  // the int at index 0 is now 90. The index of an array starts
>     at 0 and ends at myints.length - 1
>     myints[9] = 99;  // the int at index 9 is now 99
>
>
>     This view of an array starting at 0 is more an implementer view that is
>     considering the first element of the array is starting at the offset 0 of the
>     base of the array....But in mathematics, an array has usually an lower
>     bound and
>     an upper bound which are not always 0 and length - 1. Thus from my point of
>     view, an "true" array should have a lower bound and an upper bound as in many
>     others computer languages (as Algol, PL/1 for example)
>
>     Thus, I would propose a more abstract view of an array like
>
>     int[] myints;
>     myints = new array[-100:100];
>     myints[-100] = 0;
>     myints[0] = 0;
>
>     with obviously all adapted controls and exception like an index out of array
>     range and a length = upperbound - lowerbound + 1
>
>     myints[500] = 0; // throw an index out of array bound exception
>     myints.length == upperbound - lowerbound + 1 // this is true
>
>     That's all folks!
>
>     FA
>
>
>
>
>
>
>     Le 23/10/2013 08:03, Francis ANDRE a écrit :
>     > Hi Coin list
>     >
>     > I discovered this discussion list recently -- coin is not an obvious
>     slang for a
>     > non US guy, so the discovery was more by curiosity than understanding --
>     and I
>     > am wondering if there will be another open call for proposals in near
>     future?
>     >
>     > Francis
>     >
>     >
>
>
>
>
>
> -- 
> Llewellyn Falco
> www.approvaltests.com <http://www.approvaltests.com>
> www.teachingkidsprogramming.org <http://www.teachingkidsprogramming.org>
>