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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