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Re: Elisp - Function returning a list
From: |
steve-humphreys |
Subject: |
Re: Elisp - Function returning a list |
Date: |
Wed, 16 Dec 2020 06:20:35 +0100 |
> 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
>
>
>
- Re: let, let*, oh, why [was: Elisp - Function returning a list], (continued)
- Re: let, let*, oh, why [was: Elisp - Function returning a list], tomas, 2020/12/21
- Re: let, let*, oh, why [was: Elisp - Function returning a list], 황병희, 2020/12/25
- Re: let, let*, oh, why [was: Elisp - Function returning a list], Emanuel Berg, 2020/12/25
- Re: let, let*, oh, why [was: Elisp - Function returning a list], Jean Louis, 2020/12/26
- Re: let, let*, oh, why [was: Elisp - Function returning a list], Emanuel Berg, 2020/12/26
- Re: let, let*, oh, why [was: Elisp - Function returning a list], Christopher Dimech, 2020/12/26
- Re: let, let*, oh, why [was: Elisp - Function returning a list], Byung-Hee HWANG, 2020/12/26
Re: Elisp - Function returning a list, steve-humphreys, 2020/12/15
Re: Elisp - Function returning a list, steve-humphreys, 2020/12/16
Re: Elisp - Function returning a list, Jean Louis, 2020/12/16
Re: Elisp - Function returning a list, Emanuel Berg, 2020/12/16
Re: Elisp - Function returning a sequence of times, Jean Louis, 2020/12/16
Re: Elisp - Function returning a sequence of times, steve-humphreys, 2020/12/16
Re: Elisp - Function returning a sequence of times, Joost Kremers, 2020/12/16
Re: Elisp - Function returning a sequence of times, steve-humphreys, 2020/12/16
Re: Elisp - Function returning a sequence of times, Michael Heerdegen, 2020/12/16
Re: Elisp - Function returning a list, Emanuel Berg, 2020/12/15