From: Dirk Einecke <dirk.einecke@...>
Date: 2004-07-18T02:52:14+09:00
Subject: Problem with defined?

Hi.

I've a class to get all vars from params:

class CgiParamsToLocal
   def initialize(params)
     @params = params
   end
   def method_missing(m, *other)
     @params[m.to_s][0]
   end
end

Using:

p = CgiParamsToLocal.new($cgi.params)

No I want to check if for example p.foo ist defined. I tried it like this:

print p.foo # -> Test
if ( defined?(p.foo) ) then
   # do something
else
   # do some other things
end

Well - p.foo is defined but why I ever get only the else part?

If I do it like this all is okay:

print p.foo # -> Test
if ( p.foo.length != 0 ) then
   # do something
else
   # do some other things
end

Now - why is defined? not working in my example?

greetings
Dirk Einecke