From: Phrogz <gavin@...>
Date: 2007-01-17T06:05:06+09:00
Subject: Re: Calculate number of non-weekend days between two dates?

Dale Martenson wrote:
> A more useful twist might be to collect the weekdays and return an
> array:

How about:

require 'date'
d1 = Date.new( 2006, 12, 1 )
d2 = Date.new( 2007, 1, 15 )

WEEKDAY_NUMBERS = [1,2,3,4,5]
weekdays = (d1..d2).select{ |d| WEEKDAY_NUMBERS.include?( d.wday ) }
p weekdays.length
#=> 32