From: Chris Maier <christopher.maier@gmail.com>
To: nicholas.dokos@hp.com
Cc: emacs-orgmode@gnu.org
Subject: Re: Last workday of the month
Date: Sat, 30 Oct 2010 20:03:15 -0400 [thread overview]
Message-ID: <AANLkTinEMqwDuz0GtNffdeU4Jx9-9HzLJntEBfZcPB_a@mail.gmail.com> (raw)
In-Reply-To: <6322.1288469994@gamaville.dokosmarshall.org>
Where do the functions 'calendar-extract-day',
'calendar-extract-month', 'calendar-extract-year', and
'calendar-last-day-of-the-month' come from? I was looking for
something like those when I wrote my initial implementation, but I
don't seem to have them (hence the ugliness of the code!) I'm running
GNU Emacs 23.2 for Mac OS X. Searching for these functions using `C-h
f` turns up nothing for me.
Thanks for the help,
Chris
On Sat, Oct 30, 2010 at 4:19 PM, Nick Dokos <nicholas.dokos@hp.com> wrote:
> 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:[~2010-10-31 0:03 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
2010-10-31 0:03 ` Chris Maier [this message]
2010-10-31 1:36 ` Chris Maier
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