From: Joe Van Dyk <joevandyk@...>
Date: 2005-12-23T09:32:23+09:00
Subject: Re: What's the "#" for?

On 12/22/05, redrhodes <richstep911@gmail.com> wrote:
> I've started on my first ruby project and came accross the following
> code from:
> http://habtm.com/articles/2005/11/13/your-site-doesnt-look-too-good-in-x-browser
>
> Since I've managed to understand most of what's going on here, but I
> still can't find a reference on how and why to use "#".    From
> following the code it looks like an escape character for a variable to
> be populated when enclosed within quotes.  Does anyone have enough
> understanding on the syntax to help a ruby nubie?
>
> class Hash
>   def to_sql
>     sql = keys.sort {|a,b| a.to_s<=>b.to_s}.inject([[]]) do |arr, key|
>       arr[0] << "#{key} = ?"
>       arr << self[key]
>     end
>     [sql[0].join(' AND ')] + sql[1..-1]
>   end
> end

a = "hay guys"
puts "this is what a is: #{ a }"

prints:
this is what a is: hay guys