Shurely that should be called >CLIP ? ;-) On Monday, May 1, 2023 at 5:46:45 PM UTC+1 tbp1...@gmail.com 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 tbp1...@gmail.com 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 <tbp1...@gmail.com> >>>> 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 >>>> >>>> -- You received this message because you are subscribed to the Google Groups "leo-editor" group. To unsubscribe from this group and stop receiving emails from it, send an email to leo-editor+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/leo-editor/ee651b29-8e39-47c5-aa55-f9b4f6f122f2n%40googlegroups.com.