From: "Brian Schröder" <ruby.brian@...>
Date: 2005-04-29T07:14:06+09:00
Subject: Re: Newbie question: Simple Ruby Date Question

On 28/04/05, mattscape <matthias.luebken@gmail.com> wrote:
> Thanks !
> I guess I like Ryans version better.
> Mostly because I understand it ;-)
> 
> 

The version of Kazuhisa is not that hard to understand.
First:
(Date.new(month.year, month.month, 1)..Date.new(month.year, month.month, -1))
Is the range of days in the given month. (-1 is often used as index
for the last item, the same applies e.g. to Array and String).

Then he selects those elements from the range that have a weekday
between 1 and 5, that are all the days you wanted. The result is an
array of the weekdays of the month.

You will see that this reads a lot simpler than my english description
or your procedural code once you understood it.

Or break it in two lines then it is nearly english
days_of_the_month = (Date.new(month.year, month.month,
1)..Date.new(month.year, month.month, -1))
weekdays_of_month = days_of_the_month.select { | day | (1..5).include?day.wday }

best regards,

Brian

-- 
http://ruby.brian-schroeder.de/

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