Accessing the count/iteration # within an "each"?

ruby-talk
1

Hi,

Is there a way to access the count / iteration# within an "each" loop? i.e.
how many times through the loop one is?

testhash.each { |d|
  puts <count>

}

Tks
Greg

2

testhash.each_with_index {|d, i| puts i}

- donald

···

-----Original Message-----
From: Greg Hauptmann [mailto:greg.hauptmann.ruby@gmail.com]
Sent: Friday, June 15, 2007 4:35 PM
To: ruby-talk ML
Subject: accessing the count/iteration # within an "each" ???

Hi,

Is there a way to access the count / iteration# within an
"each" loop? i.e.
how many times through the loop one is?

testhash.each { |d|
  puts <count>

}

3

Greg Hauptmann wrote:

Is there a way to access the count / iteration# within an "each" loop? i.e.
how many times through the loop one is?

ruby$ ri Enumerable#each_with_index
--------------------------------------------- Enumerable#each_with_index
     enum.each_with_index {|obj, i| block } -> enum

···

------------------------------------------------------------------------
     Calls block with two arguments, the item and its index, for each
     item in enum.

        hash = Hash.new
        %w(cat dog wombat).each_with_index {|item, index|
          hash[item] = index
        }
        hash #=> {"cat"=>0, "wombat"=>2, "dog"=>1}

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4

excellent - thanks guys

···

On 6/16/07, Tim Hunter <TimHunter@nc.rr.com> wrote:

Greg Hauptmann wrote:
> Is there a way to access the count / iteration# within an "each"
> loop? i.e.
> how many times through the loop one is?
ruby$ ri Enumerable#each_with_index
--------------------------------------------- Enumerable#each_with_index
     enum.each_with_index {|obj, i| block } -> enum
------------------------------------------------------------------------
     Calls block with two arguments, the item and its index, for each
     item in enum.

        hash = Hash.new
        %w(cat dog wombat).each_with_index {|item, index|
          hash[item] = index
        }
        hash #=> {"cat"=>0, "wombat"=>2, "dog"=>1}

--
RMagick OS X Installer [http://rubyforge.org/projects/rmagick/\]
RMagick Hints & Tips [http://rubyforge.org/forum/forum.php?forum_id=1618\]
RMagick Installation FAQ [http://rmagick.rubyforge.org/install-faq.html\]