Morton Goldberg
12/21/2006 7:31:00 AM
On Dec 20, 2006, at 5:30 PM, Josselin wrote:
> I am running locally without any problem the following simple
> statement (detect first non-zero value...)
>
> nb_cities_alphabet = [7, 21, 20, 1, 4, 1, 18, 3, 5, 1, 4, 48, 21,
> 8, 0, 31, 6, 10, 47, 7, 0, 1, 0, 0, 0, 0]
>
> i = nb_cities_alphabet.index(nb_cities_alphabet.detect {|x| x
> > 0})
> letter = ('A'..'Z').to_a[i]
>
> but when running it with my ISP I get the error message :
>
> NoMethodError : undefined method `detect' for false:FalseClass
>
> any idea why this error ? and why I don't get it locally ?
>
> if it's actually a lib problem... any trick to replace it
> thanks a lot
I don't have any idea about what's going wrong with your server, but
you might try the following code. It's a little more robust and
efficient than what you are using now.
<code>
nb_cities_alphabet = [7, 21, 20, 1, 4, 1, 18, 3, 5, 1, 4, 48, 21, 8,
0, 31, 6, 10, 47, 7, 0, 1, 0, 0, 0, 0]
i = ?* - ?A
nb_cities_alphabet.each_with_index do |e, k|
if e > 0
i = k
break
end
end
letter = (i + ?A).chr
</code>
It will assign an asterisk ('*') to letter when there are no non-zero
items in nb_cities_alphabet, which help with debugging.
Regards, Morton