From: Christian Johansson <christian@cvj.se>
To: Stefan Monnier <monnier@iro.umontreal.ca>
Cc: emacs-devel@gnu.org
Subject: Re: I want to add a package to GNU ELPA: infix-notation-calculator
Date: Tue, 17 Aug 2021 09:32:37 +0200 [thread overview]
Message-ID: <90971c32-68c7-f59e-c426-ef0ecc5af0d0@cvj.se> (raw)
In-Reply-To: <jwv1r6txdk8.fsf-monnier+emacs@gnu.org>
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
>
>
next prev parent reply other threads:[~2021-08-17 7:32 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-08-16 21:14 I want to add a package to GNU ELPA: infix-notation-calculator Christian Johansson
2021-08-16 22:01 ` Stefan Monnier
2021-08-17 7:32 ` Christian Johansson [this message]
2021-08-17 11:01 ` Eric S Fraga
2021-08-17 11:20 ` Christian Johansson
2021-08-17 15:21 ` Eric S Fraga
2021-08-17 15:27 ` Christian Johansson
2021-08-17 15:54 ` Eric S Fraga
2021-08-17 16:55 ` Christian Johansson
2021-08-17 23:28 ` Stefan Monnier
2021-08-18 6:40 ` Michael Heerdegen
2021-08-18 9:03 ` Christian Johansson
2021-08-18 10:47 ` Eric S Fraga
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