From: ptkwt@...1.aracnet.com (Phil Tomson)
Date: 2002-11-10T10:03:25+09:00
Subject: Re: Lighting Rod

In article <48674.148.78.249.10.1036859159.squirrel@enigo.com>,
Kirk Haines <khaines@enigo.com> wrote:
>Eric Armstrong said:
>
>> 3) 3.times.
>>    How many times does this execute, really?
>>    I saw one page that said it cycled through
>>    indices 0,1,2,3. Hopefully, that was an error!
>>    (If not, this item definitely belongs on the list
>>     of things every newcomer needs to know!)
>
>This one is certainly easy to test for oneself:
>
>[root@enigo1 tutorial]# irb
>irb(main):001:0> 3.times {|d| puts d}
>0
>1
>2
>3
>irb(main):002:0> 2.times {|d| puts d}
>0
>1
>2
>irb(main):003:0> 0.times {|d| puts d}
>0
>
>Note that the above is done with Ruby 1.6.7
>
>And this is certainly inconsistent with what is stated in the Pickaxe book:
>
>"Iterates block int times, passing in values from zero to int - 1"

Well, no it's not inconsistent.  The last number you're seeing is returned 
from the block and irb prints it.

Try this:

irb(main):002:0> 3.times { |i| puts "iteration: #{i}" }
iteration: 0
iteration: 1
iteration: 2
3


Phil