From: Tom Reilly <w3gat@...>
Date: 2005-11-24T05:22:37+09:00
Subject: syntax error warning: useless use of a variable in void context

class Tl
    def initialize(a,b)
        @a = a
        @b = b
    end
    
    def to_s
        "#{@a}    #{@b}"
    end
    
    def <=>(tlr)
        if @a > tlr.@a
            1
        elsif
            @a == tlr.@a
                0
        else
            -1
        end
    end
    
end

aa = Tl.new("tom","reilly")
ab = Tl.new("jack","charity")

r = aa <=> ab
p r

--------------------------
 >ruby -cw tmp.rb
tmp.rb:12: syntax error
tmp.rb:12: warning: useless use of a variable in void context
tmp.rb:14: syntax error
tmp.rb:15: syntax error
tmp.rb:15: warning: useless use of a variable in void context
tmp.rb:19: warning: else without rescue is useless
tmp.rb:22: syntax error
 >Exit code: 1


Considering I've been using Ruby for a couple of years, I've been 
totally frustrated
making this bit of code work.

Help!
Thanks