From: Harry Kakueki <list.push@...>
Date: 2010-07-21T00:26:08+09:00
Subject: Re: Count occurences of vars in array

On Tue, Jul 20, 2010 at 11:25 PM, Vitaliy Yanchuk <fuksito@gmail.com> wrote:
> Jean-Julien Fleck, thanks.
> Maybe have an idea of a one-line version? :)
>

Try this or something like this.
I'm very sleepy ZZZZZZZZZZZ




arr = ["a", "b", "a", "c", "c", "b", "b"]
p Hash[*(arr.uniq.map{|x| [x,arr.select{|y| y == x}.length]}).flatten]

#> {"a"=>2, "b"=>3, "c"=>2}


Harry