From: Marco Patzer <homerow@lavabit.com>
To: ntg-context@ntg.nl
Subject: Re: deferred variable lookup in environment?
Date: Sat, 2 Feb 2013 00:31:59 +0100 [thread overview]
Message-ID: <20130201233159.GF26731@homerow> (raw)
In-Reply-To: <510C4B3F.5080304@ingohohmann.de>
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On 2013–02–02 Ingo Hohmann wrote:
> I'm trying to have the date in a layer in an environment. In the
> text using the environment, I want to be able to set the date.
> If the date is not set, the current date should be used, otherwise
> the set date.
> This is what I've tried, but it is always the currentdate, that is
> displayes.
You are trying to use the date before it is defined. You can use a
two-pass mechanism:
\define\mydate{\datasetvariable{mydata}{date}{date}}
\definelayer
[firstpage]
\setlayer
[firstpage]
[hoffset=14cm, voffset=3.5cm]
{\framed[frame=on, width=4cm, height=2cm]{%%
\doiftextelse{\mydate}{\mydate}{\currentdate}}}
\setupbackgrounds
[page]
[background=firstpage]
\definedataset
[mydata]
\setdataset
[mydata]
[date]
[date=2011-11-11]
\starttext
\doiftextelse{\mydate}{\mydate}{\currentdate}
\stoptext
Marco
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next prev parent reply other threads:[~2013-02-01 23:31 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-02-01 23:09 Ingo Hohmann
2013-02-01 23:31 ` Marco Patzer [this message]
2013-02-05 15:01 ` Ingo Hohmann
2013-02-05 15:29 ` Marco Patzer
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