From: steve-humphreys@gmx.com
To: moasenwood@zoho.eu
Cc: help-gnu-emacs@gnu.org
Subject: Re: Elisp - Function returning a list
Date: Wed, 16 Dec 2020 06:20:35 +0100 [thread overview]
Message-ID: <trinity-db17312e-55f5-4892-80aa-7fa06d098f9b-1608096034987@3c-app-mailcom-bs15> (raw)
In-Reply-To: <87o8iu8igd.fsf@zoho.eu>
> Sent: Wednesday, December 16, 2020 at 5:48 AM
> From: "Emanuel Berg via Users list for the GNU Emacs text editor" <help-gnu-emacs@gnu.org>
> To: help-gnu-emacs@gnu.org
> Subject: Re: Elisp - Function returning a list
>
> Yuri Khan wrote:
>
> >> For me 800 is 8 O'Clock
> >
> > You cannot just do decimal arithmetics on times written in
> > that format.
> >
> > Start: 800 End: 1100 Skip: 45
> > Expected: 800 845 930 1015 1100
> > Actual: 800 845 890 935 980 1025 1070
>
> Arithmetics on time? Is that the purpose?
Yes, to set the agenda time grid.
> If so, check out this:
>
> ;;; -*- lexical-binding: t -*-
> ;;;
> ;;; this file:
> ;;; http://user.it.uu.se/~embe8573/emacs-init/time-cmp.el
> ;;; https://dataswamp.org/~incal/emacs-init/time-cmp.el
>
> (defun wall-clock-time (h1 m1 s1 h2 m2 s2)
> (let*((d 08) ; arbitrary day to use below, any would do
> (m 05) ; actually something cool happened that day
> (y 1978) ; in the history of climbing
> (total-seconds-1 (float-time (encode-time s1 m1 h1 d m y)))
> (total-seconds-2 (float-time (encode-time s2 m2 h2 d m y)))
> (s-diff (- total-seconds-2 total-seconds-1)) )
> (format-seconds "%.2h:%.2m:%.2s" s-diff) ))
> (defalias 'wct #'wall-clock-time)
> ;; (wct 09 35 10 23 00 00) ; 13:24:50
> ;; (wct 09 35 10 09 35 20) ; 00:00:10
>
> (defun time-between-times (year1 month1 day1
> year2 month2 day2)
> (let*((seconds-then (float-time (encode-time 0 0 0 day1 month1 year1)))
> (seconds-now (float-time (encode-time 0 0 0 day2 month2 year2)))
> (seconds-diff (- seconds-now seconds-then)) )
> (format-seconds "%yy %dd" seconds-diff)))
> ;; (time-between-times 1958 4 13 1958 8 30) ; Tahiti Nui 2 -> 3,
> ;; ; i.e. 0y 139d
>
> (defun get-time-since (year month day)
> (interactive "nyear: \nnmonth: \nnday: ")
> (message "%s"
> (format-seconds
> "%yy %dd"
> (float-time
> (time-since (encode-time 0 0 0 day month year)) ))))
> ;; (get-time-since 2011 09 27) ; 8y 228d @ 2020-05-10
>
> --
> underground experts united
> http://user.it.uu.se/~embe8573
> https://dataswamp.org/~incal
>
>
>
next prev parent reply other threads:[~2020-12-16 5:20 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-16 3:25 Elisp - Function returning a list steve-humphreys
2020-12-16 4:09 ` Jean Louis
2020-12-16 4:17 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-16 5:04 ` steve-humphreys
2020-12-16 5:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-16 7:36 ` steve-humphreys
2020-12-16 8:55 ` Joost Kremers
2020-12-16 10:25 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-16 11:52 ` let, let*, oh, why [was: Elisp - Function returning a list] tomas
2020-12-16 14:13 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-16 15:10 ` Jean Louis
2020-12-16 15:58 ` Stefan Monnier
2020-12-16 18:37 ` Jean Louis
2020-12-16 19:04 ` Stefan Monnier
2020-12-16 20:05 ` Jean Louis
2020-12-16 20:34 ` tomas
2020-12-16 20:06 ` tomas
2020-12-18 15:08 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-18 14:27 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-18 17:42 ` Jean Louis
2020-12-18 20:57 ` Eli Zaretskii
2020-12-20 4:49 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-20 5:06 ` Thien-Thi Nguyen
2020-12-20 7:02 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-20 7:16 ` Thien-Thi Nguyen
2020-12-21 2:34 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-20 13:38 ` Jean Louis
2020-12-20 6:21 ` Jean Louis
2020-12-20 23:20 ` Drew Adams
2020-12-21 4:50 ` Jean Louis
2020-12-21 5:40 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-21 9:17 ` tomas
2020-12-21 15:20 ` Drew Adams
2020-12-21 15:50 ` tomas
2020-12-25 14:41 ` 황병희
2020-12-26 4:22 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-26 6:18 ` Jean Louis
2020-12-26 6:33 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-26 7:07 ` Christopher Dimech
2020-12-26 9:53 ` Jean Louis
2020-12-26 10:11 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-26 9:53 ` Jean Louis
2020-12-26 10:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-27 9:11 ` Byung-Hee HWANG
2020-12-27 11:52 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-27 11:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-26 6:44 ` Byung-Hee HWANG
2020-12-16 4:30 ` Elisp - Function returning a list steve-humphreys
2020-12-16 4:38 ` Yuri Khan
2020-12-16 4:48 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-16 5:20 ` steve-humphreys [this message]
2020-12-16 5:18 ` steve-humphreys
2020-12-16 5:33 ` Jean Louis
2020-12-16 5:42 ` Emanuel Berg via Users list for the GNU Emacs text editor
2020-12-16 8:01 ` Elisp - Function returning a sequence of times Jean Louis
2020-12-16 9:05 ` steve-humphreys
2020-12-16 9:20 ` Joost Kremers
2020-12-16 9:40 ` steve-humphreys
2020-12-16 21:54 ` Michael Heerdegen
2020-12-16 4:13 ` Elisp - Function returning a list Emanuel Berg via Users list for the GNU Emacs text editor
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