New to ruby

Ruby
1

why does my while loop never end?

puts ‘Please enter a number:’
number = gets.chomp.to_i
while number != ‘’
if number > 0
puts ‘You have entered a number greater than 0’
end
puts ‘Please enter a number’
number = gets.chomp.to_i
end
puts ‘Goodbye!’

2

From: Imraan M. [mailto:[email protected]]

why does my while loop never end?

check your while condition, pls.

puts ‘Please enter a number:’

number = gets.chomp.to_i

number is an integer

while number != ‘’

then you’re comparing it w a string

3

Hello,

Is there any other source where I could download the gem
activerecord-sybase-adapter.

I have been trying to access http://gems.rubyonrails.org all day, which
hosts these adapters according to
Ruby on Rails — Adapter gems available but to no
avail.

http://gems.rubyforge.net didn’t yield anything either.

I am upgrading to rails 2.0 and this is holding me back.

Many Thanks,
Aman

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4

Because gets.chomp.to_i will never be an empty string (’’).

‘’.to_i
–> 0

nil.to_i
–> 0

Regards,
Nicolai

5

Hi Imraan,

On Mon, 10 Dec 2007 04:55:51 -0500
Imraan M. [email protected] wrote:

why does my while loop never end?

puts ‘Please enter a number:’
number = gets.chomp.to_i

casting to an integer

while number != ‘’

this is a string
(while number > 0)

if number > 0
puts ‘You have entered a number greater than 0’
end
puts ‘Please enter a number’
number = gets.chomp.to_i

casting to an integer

end
puts ‘Goodbye!’

cheers,

6

Thank you all. I understand now! :slight_smile:

Mark W. wrote:

Hi Imraan,

On Mon, 10 Dec 2007 04:55:51 -0500
Imraan M. [email protected] wrote: