From: ara.t.howard@...
Date: 2006-01-17T07:08:55+09:00
Subject: Re: [newbie] this month, the next month, and the one after that

On Tue, 17 Jan 2006, James Edward Gray II wrote:

> On Jan 16, 2006, at 2:29 PM, David Vallner wrote:
>
>> Mind you, DateTime::MONTHNAMES is one-indexed, starting from January,
>
> We can fix that.  ;)
>
>> so you'll have to do some index-shiftingto wrap around the end of the array 
>> correctly. And since there's very little I hate more than shifting array 
>> indices around, the exercise is left to the reader ;P
>
> Okay, I'll bite:
>
>>> current = Time.now.strftime("%B")
> => "January"
>>> require "date"
> => true
>>> months = (Date::MONTHNAMES + Date::MONTHNAMES).compact
> => ["January", "February", "March", "April", "May", "June", "July", "August", 
> "September", "October", "November", "December", "January", "February", 
> "March", "April", "May", "June", "July", "August", "September", "October", 
> "November", "December"]
>>> three_months = months[months.index(current), 3]
> => ["January", "February", "March"]

but

   irb(main):005:0> months[months.index(current), 42].size
   => 24

not good if the app is a mortage calculator!  ;-)

-a
-- 
strong and healthy, who thinks of sickness until it strikes like lightning?
preoccupied with the world, who thinks of death, until it arrives like
thunder?  -- milarepa