From: Chad Fowler <chad@...>
Date: 2007-04-15T09:00:03+09:00
Subject: Re: Counting pairs of newline characters in a string

On 4/14/07, celldee <celldee@gmail.com> wrote:
> I have a string that is text read in from a file. Within it there are
> pairs of newline characters and I want to count how many there are.
> Here is an irb example:-
>
> irb(main):001:0> str = "bob
> irb(main):002:0"
> irb(main):003:0" and Jane"
> => "bob\n\nand Jane"
> irb(main):004:0> str.count("\n\n")
> => 2
>
> Each newline character is counted separately so I get the number 2
> returned instead of the number 1 which is what I require.
> Is there a way for me to count pairs of newline characters with a
> simple function?
>

Hi.  One way is: str.scan(/\n\n/).size

Chad