From: "Jesús Gabriel y Galán" <jgabrielygalan@...>
Date: 2009-01-15T01:37:01+09:00
Subject: Re: a beginner case question

On Wed, Jan 14, 2009 at 5:26 PM, Taylor Strait <taylorstrait@gmail.com> wrote:
> Thanks Brian and Jesus - I didn't know you could .reverse a code block.
> I had tried that with parenthesis but not just on the block itself.

Well, you are not reversing the code block, you are reversing the
result of the call to sort_by, which is an array.

The line is functionally identical to:

(answers.sort_by {|answer| answer.text}).reverse

The  sort_by method receives no params and a block, and returns an
array. You are then calling reverse on the resulting array.
It's more clear in Brian's explanation, where he used a temporary
variable to store the result of the sort_by call.

Hope this clarifies,

Jesus.