ntg-context - mailing list for ConTeXt users
 help / color / mirror / Atom feed
From: Aditya Mahajan <adityam@umich.edu>
To: mailing list for ConTeXt users <ntg-context@ntg.nl>
Subject: Re: lpdf.checkedkey has problem with false values
Date: Mon, 15 Sep 2014 11:56:54 -0400 (EDT)	[thread overview]
Message-ID: <alpine.LNX.2.03.1409151155370.7919@hzvpu.rqh> (raw)
In-Reply-To: <CALDha9N1K0cK1a9J8EyKbrHtK-pN24URoLnihnDj4ZOS9QhA4w@mail.gmail.com>

On Mon, 15 Sep 2014, Michail Vidiassov wrote:

> Dear Peter,
>
>> More a lua design decision. 'nil' is equal to 'false' here
>
> I know no CS theory behind lua design, but try this:
> \starttext
> \startluacode
> if nil == false then
>  io.write("nil == false\n")
> end
> if nil ~= false then
>  io.write("nil ~= false\n")
> end
> \stopluacode
> TEST
> \stoptext
>
> and get
>
> nil ~= false

I think that what Peter meant was:

if nil then
  ....
end

if not nil then
   ...
end

Aditya
___________________________________________________________________________________
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://tex.aanhet.net
archive  : http://foundry.supelec.fr/projects/contextrev/
wiki     : http://contextgarden.net
___________________________________________________________________________________


  reply	other threads:[~2014-09-15 15:56 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-09-15 14:14 Michail Vidiassov
2014-09-15 14:59 ` Peter Rolf
2014-09-15 15:34   ` Michail Vidiassov
2014-09-15 15:56     ` Aditya Mahajan [this message]
2014-09-15 16:12       ` Michail Vidiassov
2014-09-15 17:12         ` Hans Hagen
2014-09-15 18:25           ` Michail Vidiassov
2014-09-15 19:17             ` Hans Hagen
2014-09-16  3:33               ` Michail Vidiassov

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=alpine.LNX.2.03.1409151155370.7919@hzvpu.rqh \
    --to=adityam@umich.edu \
    --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).