ubuntu-phone team mailing list archive

[Michael Wild <themiwi@xxxxxxxxx>]

Just a request from the side-line: please add a RPN mode, the way that HP
calculators do it. Entering formulas that involve a lot of sub-expressions
is just so much more natural when you can evaluate them separately, leave
them on the stack and then process them further by popping them off the
stack. E.g. the stationary example would then be entered as

1.05
<ENTER>
5
×
10.00
<ENTER>
7
×
28.79
<ENTER>
8
×
+
+

Essentially it's reading the formula "inside-out", much the way you do when
you think about it. There's no need to remember to put the brackets in the
right places, no need to plan ahead. The landscape view could display the
expressions that lead up to this value on the stack, so it's easier to
remember what it contains. Long expressions would need to be abbreviated,
of course, but could be expanded/scrolled through by the user when tapped
or swiped.


Cheers

Michael


On Mon, Mar 4, 2013 at 10:16 AM, Calum K Pringle <
calum.pringle@xxxxxxxxxxxxx> wrote:

> Hi Dalius, everyone, and good morning!
>
> I guess you've all been looking at calculators over the weekend! I've just
> caught up with my mail and we will go through these threads later today.
> We'll answer these questions in a reply as soon as we can (promise).
>
>
> Calum Pringle
> Interaction Designer
>
> Canonical Design Team
> m: 0773 9317055
> e: calum.pringle@xxxxxxxxxxxxx
>
>
>
> On 3 Mar 2013, at 14:08, Dalius wrote:
>
> Hi,
>
> On Sun, Mar 3, 2013 at 2:52 PM, Bruno Girin <brunogirin@xxxxxxxxx> wrote:
>>
>>  Now what you would do with 8 pairs of scissors is another question:
>> Edward Scissorhands Halloween costume?
>>
> This or office administrator in (small) company.
>
> Thanks for other ideas. We will definitely use something + I believe
> designers are reading as well.
>
> Regards,
> Dalius
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