Number: 1809

Date: 10-Aug-84 16':06':18

Submitter: Sannella.PA

Source: AHenderson.pa

Subject: Want system function to parse date

Lisp Version: 

Description: '
Date': 18 Jul 84 14':02 PDT'
From': AHenderson.pa'
Subject': Lisp': Date Package'
To': LispSupport.pa'
cc': AHenderson.pa'
'
Lisp System Date': 10-Jun-84 18':41':09'
Machine': Dorado (AHenderson)'
Microcode version': 24,4'
Memory size': 10000'
Frequency': ??'
Impact': ??'
'
Is there a system function which computes the day of the week, given a date. Or more generally, is there a general "date" package which will return from a date':'
  '
  minutes '
  hours (12 and 24)'
  am/pm'
  day'
  day of the week'
  dayu of year'
  month (long form and short form)'
  year'
'
APROPOS said nothing. DATETIME seems like overkill.'
'
Austin'
'
-----'
'
Date': 19 Jul 84 14':25 PDT'
Sender': Sannella.pa'
Subject': Re': Date Package'
To': AHenderson.pa'
cc': LispSupport.pa'
From':  LispSupport.pa'
Reply-To': LispSupport.pa'
'
I forwarded your message to LispCore^, and received the following reply.  I hope that this is of some help.'
'
Note that this describes an internal "\"-function, which we are not commited to maintain.'
'
     ----- Begin Forwarded Messages -----'
'
Date': 19 Jul 84 13':13 PDT'
From': vanMelle.pa'
Subject': Re': Are there any hooks to internal date functions?'
In-reply-to': LispSupport.pa''s message of 19 Jul 84 11':40':53 PDT (Thursday)'
To': LispSupport.pa'
cc': LispCore^.pa'
'
The closest we have is (\UNPACKDATE D), which given a numeric date D (such as produced by IDATE) returns a list (year month dayOfMonth hour minute seconds daylightsavingsp), with all values except daylightsavingsp being numbers, month in [0..11] and hour in [0..23].  The function computes the day of the week internally (in order to compute daylightsavingsp), but does not produce it; it could easily be modified to do so.'
'
Seems like a tiny bit of cleaning up on this would produce a reasonable user-accessible function.'
'
	Bill'
'
     ----- End Forwarded Messages -----'


Workaround: 

Test Case: 

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Attn: Lisp

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Disposition: 

System: Language Support

Subsystem: Other

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Difficulty: Moderate

Frequency: 

Impact: Moderate

Priority: Perhaps

Status: Open

Problem Type: Design - Impl

Source Files: