From: Anurag Priyam <anurag08priyam@...>
Date: 2011-01-14T07:12:03+09:00
Subject: Re: Retrieving and copying element from array

> Thanks for reply, Anurag. Can't get this to work though:
>
> irb(main):001:0> lines = File.readlines('test.txt')
> => ["category: cat1\n", " item1\n", " item2\n", " item3\n", "category:
> cat2\n", " item1\n", "category: cat3\n", " item1\n", " item2\n", "
> item3\n", " item4\n", "\n"]
> irb(main):002:0> puts lines
> category: cat1
>  item1
>  item2
>  item3
> category: cat2
>  item1
> category: cat3
>  item1
>  item2
>  item3
>  item4
>
> => nil
> irb(main):003:0> result = []
> => []
> irb(main):004:0> lines.each_slice(2) { |i, j|
> result.push(i.sub(/category: /, '')); b.push(*j.split(', '))}
> NameError: undefined local variable or method `b' for main:Object

My bad; typed in wrong. The 'b' should be 'result' - we want to
collect the processed element in the same array.

>> result = []
>> lines.each_slice(2) {|i, j| result.push(i.sub(/category: /, '')); result.push(*j.split(', '))}

-- 
Anurag Priyam
http://about.me/yeban/