From: Nick Dokos <nicholas.dokos@hp.com>
To: Chris Maier <christopher.maier@gmail.com>
Cc: nicholas.dokos@hp.com, emacs-orgmode@gnu.org
Subject: Re: Last workday of the month
Date: Sat, 30 Oct 2010 16:19:54 -0400 [thread overview]
Message-ID: <6322.1288469994@gamaville.dokosmarshall.org> (raw)
In-Reply-To: Message from Chris Maier <christopher.maier@gmail.com> of "Sat, 30 Oct 2010 14:55:57 EDT." <AANLkTim4RGcj9XNCrvZme_Qv7PA3EppUgEGHc=sohTH_@mail.gmail.com>
Chris Maier <christopher.maier@gmail.com> wrote:
> I'm trying to come up with a sexp diary entry that shows my payday,
> which is the last weekday of the month, in my Org agenda. I've tried
> to adapt the example given in the Emacs manual and this is what I came
> up with:
>
> %%(let ((month (car date))
> (day (cadr date))
> (dayname (calendar-day-of-week date)))
> (or
> ;; months with 31 days
> (and (memq month '(1 3 5 7 8 10 12))
> (or (and (= day 31)
> (memq dayname '(1 2 3 4 5)))
> (and (memq day '(29 30))
> (= dayname 5))))
> ;; months with 30 days
> (and (memq month '(4 6 9 11))
> (or (and (= day 30)
> (memq dayname '(1 2 3 4 5)))
> (and (memq day '(28 29))
> (= dayname 5))))
> ;; February (the weird one)
> (and (= month 2)
> (or (and (memq day '(28 29))
> (memq dayname '(1 2 3 4 5)))
> (and (memq day '(26 27 28))
> (= dayname 5)))))) Chris' Paycheck Deposited
>
> It appears to work so far. However, I'm certain there's got to be a
> more concise way of coding this, but I can't seem to find any
> pre-existing calendar functions that might help. Am I missing
> something?
>
This is based on the same idea and example from the manual, but it
precalculates what it needs in order to simplify the decision at
the end:
(let* ((dayname (calendar-day-of-week date))
(day (calendar-extract-day date))
(month (calendar-extract-month date))
(year (calendar-extract-year date))
(lastday (calendar-last-day-of-month month year))
(last-two-days-before-last-day (list (- lastday 2) (- lastday 1))))
(or (and (= day lastday) (memq dayname '(1 2 3 4 5)))
(and (memq day last-two-days-before-last-day) (= dayname 5)))
)
Very lightly tested, so use with caution.
> To make this even better, is there some way to consult another file of
> diary entries containing all the holidays at my workplace, so the
> diary entry would show up on the last weekday of the month that is not
> a company holiday?
>
I'm sure there is - simplest is probably to set a variable in your
.emacs with all the holidays - schedule that with org for Dec. 31 :-) -
but you are on your own for that. I just don't think it's worth it: at
least for me, there are only three holidays during a year that might
interfere with that pay schedule.
HTH,
Nick
next prev parent reply other threads:[~2010-10-30 20:20 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-30 18:55 Last workday of the month Chris Maier
2010-10-30 20:19 ` Nick Dokos [this message]
2010-10-31 0:03 ` Chris Maier
2010-10-31 1:36 ` Chris Maier
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