Re: I want to add a package to GNU ELPA: infix-notation-calculator

[Christian Johansson]

Hi!

Sure, I think calc and calculator are more full-focused calculators that 
require a learning-curve, this plugin is more of an quick ad-hoc 
calculator that calculates values like (infix notation)

* 1+3*5
* 4 + 4.5 - (34/(8*3+-3))
* -56 + 2
* 3^2

So you can just select a region (regardless of mode) containing any 
expression like that and you will get the calculated result in the echo 
area and in the calculation log buffer.

You can also use the mode infix-notation-calculator-mode in a buffer to 
make calculations at chosen places in the buffer, so you can mix notes 
with calculations (like a spreadsheet but less advanced), example 
buffer-contents:
---

Morgage:
100000*0.05
=5000.0

Skates to my daughter:
6000+2000+1500
=9500.0

;; Some random notes here

Ratio:
4 + 4.5 - (34/(8*3+-3))
=6.880952380952381
---

Here the calculations are inserted automatically on the next line when 
pressing <C-return>. This is very handy I think when making everyday 
ad-hoc notes

Lastly you can calculate any input in the mini-buffer on demand

Hälsningar / Best Regards
Christian

On 17/08/2021 00:01, Stefan Monnier wrote:
> Christian Johansson [2021-08-16 23:14:27] wrote:
>
> > Hi!
> >
> > Here is the plugin:
> > https://github.com/cjohansson/emacs-infix-notation-calculator
> >
> > Features are:
> > * Calculate selected text
> > * Calculate input in minibuffer
> > * A calculate-mode where calculation of line is done automatically when
> >      pressing C-return
> > * A history buffer of all calculations
> Any chance you could expand a bit on what this does?
> The `README.md` and the `Commentary:` are both fairly limited, basically
> the only description of what it computes is given by the package's name.
>
> I think it needs some description of the format it accepts, and maybe
> a brief comparison with other Emacs calculators (such as the bundled
> `calc` and `calculator`).
>
>
>          Stefan