From: wmorgan-sup@masanjin.net (William Morgan)
Subject: [sup-talk] how to have an hook play a sound
Date: Sat, 05 Jan 2008 10:43:51 -0800 [thread overview]
Message-ID: <1199558282-sup-230@south> (raw)
In-Reply-To: <1199552937-sup-9378@clarabella.clarabella>
Excerpts from Giorgio Lando's message of Sat Jan 05 09:11:10 -0800 2008:
> Hi again, I do not speak ruby and I am trying to write an
> after-poll.rb which plays a sound when there are new messages.
No problem. You were just one small character away.
> My less absurd try is perhaps:
>
> if @num>=1
> system "/usr/bin/aplay -q <mysound>"
> end
Just remove the '@'. The variable 'num' is what you want; '@num' refers
to a different, instance, variable. @num is undefined, so it defaults to
'nil', and that's why the error was about an undefined method on the nil
object.
(Incidentally, you can use instance variables to save state between
successive calls to the same hook. Not useful in this case, but in more
complex hooks this is handy.)
> With:
>
> if @num!=0
> system "/usr/bin/aplay -q <mysound>"
> end
>
> The sound is always player, also when there is no new message polled.
This is because nil is not equal to 0 in Ruby, so the conditional is
always true.
You can also check out the example hooks on the Wiki
(http://sup.rubyforge.org/wiki/wiki.pl?Hooks). Feel free to post your
masterpiece there when completed.
--
William <wmorgan-sup at masanjin.net>
next prev parent reply other threads:[~2008-01-05 18:43 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-05 17:11 Giorgio Lando
2008-01-05 18:43 ` William Morgan [this message]
2008-01-05 21:29 ` Giorgio Lando
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