From: Rik Kabel <context@rik.users.panix.com>
To: ntg-context@ntg.nl
Subject: Re: Expansion help needed, getvariable and TABLE
Date: Tue, 30 Jan 2018 21:31:32 -0500 [thread overview]
Message-ID: <526487a7-15c4-6e7b-45b0-e06c10221e30@rik.users.panix.com> (raw)
In-Reply-To: <510aff38-9cc5-bebd-107d-a569695a4403@rik.users.panix.com>
On 2018-01-30 21:10, Rik Kabel wrote:
>
> Listers,
>
> I have a problem, and a question on ConTeXt programming efficiency.
>
> In the example below, I have a set of variables. When these are
> reference directly via \getvariable, everything works as expected in
> simple text and in TABLEs. When I \define a macro to the \getvariable,
> that works in simple text, but only the value of the last iteration
> appears in the TABLE. The macro definition is saved and when it is
> used, that is the value that it has.
>
> So, how can I \define (or \def, ...) a macro to the expanded value to
> avoid this? That is the problem.
>
> The question is, Is there is any advantage to be had in doing this?
> Assume that the value is referenced many (tens of) times. There seems
> to be an aesthetic value of factoring out the multiple identical
> instances of the \getvariable syntax and assigning a more semantically
> informative name, but beyond that, is there any other value?
>
Replying to my own query, I see that I just have to localize the
definitions by grouping them, as
\starttexdefinition doTableRowExp #SET
{\define\A{\getvariable{#SET}{a}}
\define\B{\getvariable{#SET}{b}}
\bTR
\bTC\A\eTC
\bTC\B\eTC
\eTR}
\stoptexdefinition
Does it matter if I use {}, \bgroup\egroup, or some other mechanism?
My style question is still outstanding.
--
Rik
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next prev parent reply other threads:[~2018-01-31 2:31 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-01-31 2:10 Rik Kabel
2018-01-31 2:31 ` Rik Kabel [this message]
2018-01-31 6:04 ` Wolfgang Schuster
2018-01-31 14:47 ` Rik Kabel
2018-01-31 14:54 ` Wolfgang Schuster
2018-01-31 15:40 ` Rik Kabel
2018-01-31 16:06 ` Hans Hagen
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