From: Rubic <fakeplasticco@...>
Date: 2007-04-09T15:49:08+09:00
Subject: Nesting Array loops

I new to Ruby and I have lost touch with whatever little programming I
did know a few years back. Sorry if this is a lame question.

How does one nest arrays?

I want to check every element of the array and compare it against rest
of the elements of that array for repeat occurences. but for now I did
be happy if I can get to even print the 2 values, hence 'puts #i, #j' in
the code.


  f = File.open("iplist.txt")
  f1 = File.open("iplist.txt")
  f.each  { |i|
    f1.each { |j|
     puts "#{i}, #{j}"
   }
}

With the above code I only get output of one successful iteration of
f.each and it stops and doesnt continue for the rest of the values of
f.each.

Surprisingly this works...


  (0..5).each  { |i|
    (0..4).each { |j|
     puts "#{i}, #{j}"
   }
}

00
01
02
03
04
05
10
11
12
......etc

whats the difference between the codes thats causing this error? They
are both arrays aint it?

Thanks. :)

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