From: Zach Dennis <zdennis@...>
Date: 2004-11-02T02:51:19+09:00
Subject: Re: Another scrach on head

Mohammad Khan wrote:

>On Sat, 2004-10-30 at 00:03, Yukihiro Matsumoto wrote:
>  
>
>>Hi,
>>
>>In message "Re: Another scrach on head"
>>    on Sat, 30 Oct 2004 03:38:43 +0900, Jamis Buck <jgb3@email.byu.edu> writes:
>>
>>|No, I mispoke for the sake of simplification. nil and false _evaluate to 
>>|false_ in a boolean context, and everything else evaluates to _true_ in 
>>|a boolean context.
>>
>>Ruby never get passed on telephone test.
>>
>>"In Ruby, nil and false are false, but nil is not false, because false
>>does not equal to nil.."
>>
>>							matz.
>>    
>>
>
>Hi Matz,
>
>Thanks for your reply.
>What about 'true'?
>
>My point was,
>
>a = Whatever.new    # other than NilClass or FalseClass
>
>if a
>   # block 1
>end
>
>if a == true
>   # block 2
>end
>
>block 1 and block 2 will be executed only when a.class is TrueClass.
>
>  
>
This is not true, block 1 will execute if *a* is anything but nil or false.

a = "a string"
puts  "a evaluates to true" if a

or

if a then
    puts "a evalutes to true"
end

Zach