From: Wyatt Greene <greenewm@...>
Date: 2008-05-04T22:45:03+09:00
Subject: Re: Different Ways To Loop

On May 4, 9:34 am, "David A. Black" <dbl...@rubypal.com> wrote:
> Hi --
>
>
>
> On Sun, 4 May 2008, Ashley Wharton wrote:
> > On Sun, May 4, 2008 at 8:55 AM, Wyatt Greene <green...@yahoo.com> wrote:
>
> >> On May 4, 1:54 am, Mike McKinney <r...@huikau.com> wrote:
> >>> [Note:  parts of this message were removed to make it a legal post.]
>
> >>> of course there's...
>
> >>> i=0 and while(i<100) do
> >>>   puts i+=1
> >>> end
>
> >>> i=0 and until(i==100) do
> >>>   puts i+=1
> >>> end
>
> >> > On Sat, May 3, 2008 at 11:48 PM, Dan Zwell <dzw...@gmail.com> wrote:
> >>>> Don't forget the "traditional" style loop:
>
> >>>> for x in 1..100 do
> >>>>    puts x+1
> >>>> end
>
> >>>> ara.t.howard wrote:
>
> >>>>> On May 3, 2008, at 8:10 PM, Wyatt Greene wrote:
>
> >>>>>>  1.upto(100) { |x| puts x }
>
> >>>>> here are a few
>
> >>>>> # 1
> >>>>> puts Array.new(100){|i| i + 1}
>
> >>>>> # 2
> >>>>> i = 0 and loop do
> >>>>>  puts i+=1
> >>>>>  break if i >= 100
> >>>>> end
>
> >>>>> # 3
> >>>>> puts <<-chars.strip.split(%r//).map{|c| c[0]}
>
> >> \001\002\003\004\005\006\a\b\t\n\v\f\r\016\017\020\021\022\023\024\025\026\027\030\031\032\e\034\035\036\037!\"\#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcd
>
> >>>>> chars
>
> >>>>> # 4
> >>>>> 100.times{|i| puts i + 1}
>
> >>>>> a @http://codeforpeople.com/
> >>>>> --
> >>>>> we can deny everything, except that we have the possibility of being
> >>>>> better. simply reflect on that.
> >>>>> h.h. the 14th dalai lama
>
> >>> --
> >>> Aloha!
>
> >>> Mike McKinney
> >>> m...@huikau.com
> >>> (http://blog.huikau.com)
>
> >> And here's an "object-oriented" way:
>
> >>  class Counter
> >>   def count
> >>     @count ||= 1
> >>     puts @count
> >>     @count += 1
> >>     @count > 100
> >>   end
> >>  end
>
> >> counter = Counter.new
> >> until counter.count; end
>
> >> Based on a response from Eric when I first asked for alternative ways to
> > do this:
>
> > MAX = 100
> > def print_from_to(start, stop)
> > start.upto(stop) do |number|
> >   puts number
> > end
> > end
> > loop do
> > number = 1
> > print_from_to(number, MAX)
> > break
> > end
>
> I can think of lots of ways:
>
>    puts *1..100
>    puts *1..101-1
>    puts *1..102-2   ...
>
> or
>
>    "This evaluates to true" and loop do ...
>
>    "So does this" and loop do ...
>
> :-)
>
> I don't mean to scoff at the "more than one way" thing, but it does
> in a sense contain the seeds of its own destruction :-)
>
> David
>
> --
> Rails training from David A. Black and Ruby Power and Light:
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