From: Jason Mayer <slamboy@...>
Date: 2007-02-14T05:53:29+09:00
Subject: Re: quick newbie true/false/nil question

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On 2/13/07, SonOfLilit <sonoflilit@gmail.com> wrote:
>
> Like in C, assignment returns IIRC the result of the assignment, so:
>
> ( (a = 2+3) == 5 ) == true


heh.  I should just test it for myself before posting to the mailing list.

var1 = 1
var2 = 2
if var1 = var2
  puts "First if statement = true: #{var1} = #{var2}"
else
  puts "First if statement = false: #{var1} != #{var2}"
end
var1 = 1
var2 = 2
if ((var1 = var2) == true)
  puts "Second if statement = true: #{var1} = #{var2} = true"
else
  puts "Second if statement = false: #{var1} = #{var2} != true"
end
var1 = 1
var2 = 2
if ((var1 = var2) == nil)
  puts "Third if statement = true: #{var1} = #{var2} = nil "
else
  puts "Third if statement = false: #{var1} = #{var2} != nil"
end
var1 = 1
var2 = nil
if ((var1 = var2) == nil)
  puts "Fourth if statement = true: #{var1} = #{var2} = nil "
else
  puts "Fourth if statement = false: #{var1} = #{var2} != nil"
end
#output
First if statement = true: 2 = 2
Second if statement = false: 2 = 2 != true
Third if statement = false: 2 = 2 != nil
Fourth if statement = true:  =  = nil

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