Rails - Aug 2007 - Is there a automatic counter variable?

Does ruby have anything where if I''m going through a do-while loop, or
a "3.times" loop or "for product in products" where
there''s a variable
that will tell me which iteration of the loop I''m on?  Instead of
havign to declare my own counter = 0 and then increment it each time?

Seems like something Rails would have...  I can''t seem to find
anything on it.

Thanks guys.


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Hi --

On Wed, 15 Aug 2007, sw0rdfish wrote:
>
> Does ruby have anything where if I''m going through a do-while
loop, or
> a "3.times" loop or "for product in products" where
there''s a variable
> that will tell me which iteration of the loop I''m on?  Instead of
> havign to declare my own counter = 0 and then increment it each time?
>
> Seems like something Rails would have...  I can''t seem to find
> anything on it.
3.times {|i| puts "Iteration #{i}" }

Also:

%w{a b c d e f}.each_with_index {|letter,i|
   puts "#{letter} is at index #{i}"
}


David

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sw0rdfish wrote:
> Does ruby have anything where if I''m going through a do-while
loop, or
> a "3.times" loop or "for product in products" where
there''s a variable
> that will tell me which iteration of the loop I''m on?  Instead of
> havign to declare my own counter = 0 and then increment it each time?
>
> Seems like something Rails would have...  I can''t seem to find
> anything on it.
>
> Thanks guys.
>
>   
something like this?

  (2..46).each {|i|
      puts "i is now: #{i}"
  }



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> Does ruby have anything where if I''m going through a do-while
loop, or
> a "3.times" loop or "for product in products" where
there''s a variable
> that will tell me which iteration of the loop I''m on?  Instead of
> havign to declare my own counter = 0 and then increment it each time?
irb(main):001:0> 5.times {|i| puts i }
0
1
2
3
4

irb(main):002:0> [''one'', ''two'',
''three''].each_with_index {|i,e| puts i, e}
one
0
two
1
three
2

Don''t know if "for product in products" has anything, but you
could always
do "products.each_with_index".

-philip

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Hey guys...

Looks good, the with_index is the option I was looking for... just
looked so messy having to declare a counter variable in a view...
thanks!

On Aug 15, 12:33 pm, Mohit Sindhwani
<mo_m...-RxrYI66vbj0AvxtiuMwx3w@public.gmane.org>
wrote:
> sw0rdfish wrote:
> > Does ruby have anything where if I''m going through a do-while
loop, or
> > a "3.times" loop or "for product in products"
where there''s a variable
> > that will tell me which iteration of the loop I''m on? 
Instead of
> > havign to declare my own counter = 0 and then increment it each time?
>
> > Seems like something Rails would have...  I can''t seem to
find
> > anything on it.
>
> > Thanks guys.
>
> something like this?
>
>   (2..46).each {|i|
>       puts "i is now: #{i}"
>   }

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