Shurely that should be called >CLIP ? ;-)
On Monday, May 1, 2023 at 5:46:45 PM UTC+1 [email protected] wrote:
> Devel now contains one more change. I've changed the *EXIT* key (which
> isn't needed in the Leo tab version of the calculator) to *TOCLIP*. It
> copies the "X" register - the calculation result - to the system clipboard.
>
> On Monday, May 1, 2023 at 9:31:00 AM UTC-4 Thomas Passin wrote:
>
>> When I was using TurboPascal and doing a lot of numerical 2-D
>> integrations with complex numbers, I actually wrote a little library module
>> to calculate with complex numbers as if I was using an RPN calculator. So
>> you could push a complex number on the stack, pop it off, multiply or add
>> the two numbers on the stack bottom, etc. At that time TurboPascal did not
>> have complex numbers of its own, IIRC. If N1 and N2 were two complex
>> numbers you could write, for example (based on hazy memories from long ago):
>>
>> push(N1)
>> push(N2)
>> CMul()
>> { and so forth, pun intended }
>>
>> I enjoyed using the library because it was so easy for me to write and
>> debug calculations. I just pictured how I would do the calculation on my
>> HP calculator and walked through the steps. I timed it once, and the extra
>> overhead of using the stack library compared with a hand-crafted sequence
>> of operations was about 25% (I'm sure my implementation could have been
>> improved, it was pretty brute-force). But the ease of writing the
>> calculation and debugging it - the RPN library won hands down.
>>
>> On Monday, May 1, 2023 at 9:02:49 AM UTC-4 jkn wrote:
>>
>>> I got to play with a then- just out Hewlett Packard HP-67 RPN calculator
>>> at the age of around 14. It blew my mind ... and may well have directly led
>>> to me doing what I do to this day.
>>>
>>> J^n
>>>
>>> On Sunday, April 30, 2023 at 5:59:34 PM UTC+1 [email protected] wrote:
>>>
>>>> RPCalc is a recent discovery for me. As originally written, it runs as
>>>> a standalone program, and requires Qt5. You don't need to use the
>>>> installer package for Windows. Just download the Linux tarball,
>>>> decompress
>>>> it, and navigate to the "source" directory. The file to run is -
>>>> surprise!
>>>> - rpcalc.py. It seems to do everything I want from an RPN calculator,
>>>> except that copying the stack bottom is awkward.
>>>>
>>>> To adapt it for Leo, one change was to combine all the source files
>>>> into one Leo @file tree. Another was to change the imports to use leoQt,
>>>> which makes it easier to adapt to Qt5 vs Qt6, and anyway is essential if
>>>> the program is to run in a Leo frame. I'm still finding little things
>>>> that
>>>> aren't working for both Qt5 and Qt6 - mostly enums and flags - but I'm
>>>> making progress. But overall, most of the functionality works and the
>>>> thing
>>>> is usable as it stands. I'll post an updated outline soon, and after some
>>>> more work it should be ready to appear in the Leo repo.
>>>>
>>>> On Sunday, April 30, 2023 at 11:55:06 AM UTC-4 jkn wrote:
>>>>
>>>> I have wondered about suggesting something like this for a while, so
>>>> thank you Thomas. My 'main' editor has a simple HP calculator built into
>>>> it
>>>> and it was an easy step to consider one for Leo.
>>>>
>>>> I didn't know about RPNCalc (I have some Android RPN apps on my phone,
>>>> as well as a real HP-35s), but it sounds like a good choice.
>>>>
>>>>
>>>> I've used HP RPN calculators since way back in HP-45 days. I
>>>> liked the HP-25C even better, and finally ended up using an HP-15C. Mine
>>>> still works though it's slightly misplaced just now. On my computer I've
>>>> been using Free42, which seems to me to be a good balance between
>>>> readability, complexity, and capability. Now it looks like RPCalc will be
>>>> taking over from Free42.
>>>>
>>>>
>>>> I will take a look at this shortly - thanks.
>>>>
>>>> J^n
>>>>
>>>>
>>>> On Sunday, April 30, 2023 at 12:03:14 PM UTC+1 Edward K. Ream wrote:
>>>>
>>>> On Sat, Apr 29, 2023 at 12:42 PM Thomas Passin <[email protected]>
>>>> wrote:
>>>>
>>>> I have adapted the open-source *RPCalc* calculator to run in a tab in
>>>> the Leo log frame. This calculator is a Reverse Polish Notation (RPN)
>>>> style calculator, which IMHO is much better than the algebraic-entry
>>>> type. It is the type of calculator that Hewlett-Packard made famous.
>>>>
>>>>
>>>> Thanks for this work, Thomas. The calculator appears as expected for
>>>> me.
>>>>
>>>> PR #3301 <https://github.com/leo-editor/leo-editor/pull/3301> is a
>>>> draft containing the files you mention. It's a good start. The PR lists
>>>> three problems.
>>>>
>>>> Edward
>>>>
>>>>
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