From: Robert Klemme <shortcutter@...>
Date: 2009-01-27T17:20:13+09:00
Subject: Re: Time Compare

2009/1/17 list. rb <list.rb@gmail.com>:
> now = Time.now
> yesterday=now-1.day
> tomorrow=now+1.day
>
> is_between = true if now > yesterday and now < tomorrow

Sorry for interrupting you, but this is not a safe idiom.  Why?
Because of this: assuming someone had used "is_between" before then
chances are that the value is logical true (there are far more true
values than false values). If the date is not in between you still
retain the old value of x.  Instead, rather do the assignment
unconditionally:

is_between = now > yesterday && now < tomorrow
is_between = now > yesterday and now < tomorrow

You can as well do

is_between = (yesterday..tomorrow).include? now

but this has a slightly different semantics because it will also be
true if your test time matches one of the boundaries.

Kind regards

robert

-- 
remember.guy do |as, often| as.you_can - without end