From: Hans Hagen <j.hagen@xs4all.nl>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: integer displayed as .0 float in Lua-5.3
Date: Thu, 9 Aug 2018 22:25:47 +0200 [thread overview]
Message-ID: <977bddcd-2322-4eed-9ef8-0a2a31b6e3a0@xs4all.nl> (raw)
In-Reply-To: <e2aef859-288d-c151-5e03-bf5a47a627bd@gmx.es>
On 8/9/2018 10:00 PM, Pablo Rodriguez wrote:
> On 08/09/2018 09:34 PM, Alan Braslau wrote:
>> The lua manual also states that one should NOT rely on the implicit
>> conversion of a string to its numerical value, and suggests the
>> systematic use of tonumber().
>
> Many thanks for your reply, Alan.
>
> I guess that backwards compatibility should be important here, but I
> hope there are stronger reasons for breaking it.
>
> Many thanks for your help,
In addition to what others already explained, you should not depend on
features that are implementation dependent or might disappear. That said
...
\startTEXpage[offset=1em]
\ctxlua{context([[\lastpage]])}.
\stopTEXpage
Why do you convert \lastpage to a string using [[\lastpage]] which will
use the string to number conversion. In fact this automatic cast from
string to number in an addition might disappear from the language in the
future so don't rely on that.
You can just do:
\startTEXpage[offset=1em]
\ctxlua{context(\lastpage + 1)}.
\stopTEXpage
Or when in dount about what \lastpage is
\startTEXpage[offset=1em]
\ctxlua{context(\number\lastpage + 1)}.
\stopTEXpage
or if you really want to [[ ]]
\startTEXpage[offset=1em]
\the\numexpr\ctxlua{context([[lastpage]] + 1)}\relax .
\stopTEXpage
endless possibities here.
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://context.aanhet.net
archive : https://bitbucket.org/phg/context-mirror/commits/
wiki : http://contextgarden.net
___________________________________________________________________________________
next prev parent reply other threads:[~2018-08-09 20:25 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-09 18:02 Pablo Rodriguez
2018-08-09 18:12 ` Wolfgang Schuster
2018-08-09 19:20 ` Pablo Rodriguez
2018-08-09 19:34 ` Alan Braslau
2018-08-09 20:00 ` Pablo Rodriguez
2018-08-09 20:16 ` Alan Braslau
2018-08-11 9:29 ` Pablo Rodriguez
2018-08-11 17:55 ` Alan Braslau
2018-08-12 14:44 ` Arthur Reutenauer
2018-08-09 20:25 ` Hans Hagen [this message]
2018-08-11 10:05 ` Pablo Rodriguez
2018-08-09 20:20 ` Hans Åberg
2018-08-11 9:33 ` Pablo Rodriguez
2018-08-11 12:21 ` Hans Åberg
2018-08-12 7:49 ` Hans Hagen
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=977bddcd-2322-4eed-9ef8-0a2a31b6e3a0@xs4all.nl \
--to=j.hagen@xs4all.nl \
--cc=ntg-context@ntg.nl \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).