From: <tomas@tuxteam.de>
To: guile-user@gnu.org
Subject: Re: Help formatting a UTC Timestamp
Date: Tue, 14 Feb 2017 13:48:51 +0100 [thread overview]
Message-ID: <20170214124851.GB14935@tuxteam.de> (raw)
In-Reply-To: <20170214122716.GA2454@debian>
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On Tue, Feb 14, 2017 at 12:27:16PM +0000, Guy Baumann wrote:
> I am trying to format a timestamp from an api. It is sent in the
> format "2011-03-24T20:30:47Z"
>
> what I want to output is something like this
> (strftime "%d %b %g " (localtime (current-time)) )
>
> However I am unable to work out how to do this, have tried using
> string->date with results below
>
> Enter `,help' for help.
> scheme@(guile-user)> (define date "2011-03-24T20:30:47Z")
> scheme@(guile-user)> (use-modules (srfi srfi-19))
> scheme@(guile-user)> (string->date "~Y-m-dT~H:~M:SZ" date)
> srfi/srfi-19.scm:1415:18: In procedure priv:string->date:
> srfi/srfi-19.scm:1415:18: In procedure string->date: TIME-ERROR type bad-date-format-string: "2011-03-24T20:30:47Z"
You got the args reversed: it's first the date string, then the
template. Besides, you forgot a couple of tildes in your template
(e.g. it's "~m" and not just "m" and so on). Lastly, the template
for the zone offset is "~z" (a small z). The "big Z" in your input
string is just a concrete zone (afaik UTC).
This works:
scheme@(guile-user)> (define mydate "2011-03-24T20:30:47Z")
scheme@(guile-user)> (string->date mydate "~Y-~m-~dT~H:~M:~S~z")
$3 = #<date nanosecond: 0 second: 47 minute: 30 hour: 20 day: 24 month: 3 year: 2011 zone-offset: 0>
hth
- -- t
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iEYEARECAAYFAlii/LMACgkQBcgs9XrR2kbySACfY3yqQgFw4XWIBZo1Nif8exJ1
jwUAn04XBldYBIWDDhheEjI1nLbFbjhm
=MJ3B
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next prev parent reply other threads:[~2017-02-14 12:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-14 12:27 Help formatting a UTC Timestamp Guy Baumann
2017-02-14 12:48 ` tomas [this message]
2017-02-14 13:11 ` Chris Vine
-- strict thread matches above, loose matches on Subject: below --
2017-02-14 7:45 Help formatting a UTC TImestamp Guy Baumann
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