From: Rick DeNatale <rick.denatale@...>
Date: 2006-10-03T07:02:53+09:00
Subject: Re: what's wrong in my loop ?

On 10/2/06, Josselin <josselin@wanadoo.fr> wrote:
> On 2006-10-02 14:54:58 +0200, Stephane Elie <stephane.elie@gmail.com> said:
>
> > Hi Josselin,
> >
> > Tom is right about the "i++".
> >
> > Also, it doesn't look like your pseudo-code matches your ruby code
> > functionality.
> >
> > I'll give it a shot as what you may want to do, just a guess...
> >
> > db = []
> > record.each do |b|
> >     (b.end_at - b.start_at).times { |i| db << [b.start_at+i, i ] }
> > end
>
> thansk Tom & Steph
> newbie I am mixin any languages into it....
> I actually need to remember first that Ruby is OO, so i.next makes more
> sense compared to i++

The expression i++ isn't valid ruby.

Keep in mind that

i.next

all by itself has no  effect on i:

   i = 2
   p i.next => 3
   p i => 2

Don't confuse the variable i with the object it contains.  The
expression i++ simply asks the object 2 for it's successor leaving it
unchanged.

   i += 1

which is the same as:

  i = i + 1

computes the value of i + 1 and assigns the result to the variable i.

you could also use

  i = i.next


-- 
Rick DeNatale

My blog on Ruby
http://talklikeaduck.denhaven2.com/