From: Richard Lionheart <NoOne@...>
Date: 2004-05-19T07:20:10+09:00
Subject: Thanks to both Mark and Gabriele

Hi,

Thanks for your responses.  Thanks especially to you,  Mark,  for the
reference in Programming Ruby.

You folks are great.

Regards,
Richard
"Richard Lionheart" <NoOne@Nowhere.com> wrote in message
news:4oudnTkSkNU64DfdRVn-hA@comcast.com...
> Hi,
>
> I can't find anything in Programming Ruby to suggest why zero is treated
as
> true,  as happens in lines and 12 in the following toy program.  Is it
> perhaps because Ruby has no boolean type,  so zero gets converted to a
> string, or something?  Aside from an explantion,  can you cite a relevant
> page in the Thomas&Hunt book?
>
> Thanks in advance,
> Richard
>
> def count_exes(l)
>         n = l.count "x"
> end
>
> DATA.each_line do |line|
>     print line.chomp
>     if n = count_exes(line) then print "\t(#{n} exes in line) [Pgm line
7]"
> end
>     if (n = count_exes(line)) > 0 then print "\t(additional note for
> ex-lines)" end
>     puts
> end
>
> puts "0 is " + (0?"true":"false") + " [Pgm line 12]"
>
> __END__
> Two 'xx's
> Three 'xxx's
> No ekses
>
>
>
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>


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