[LRUG] To debug the impossible bug

[James Cumming]

Hi

I think Matthew is right - you are trying to use the case statement as an if statement.
 "when" produces a positive even if the variable is nil. I think that somehow a nil @question is creeping into your methods.

I tried this in the IRB (which shows the negative positive being produced):


irb(main):001:0> question = nil
=> nil
irb(main):002:0> case
irb(main):003:1* when question
irb(main):004:1> print question
irb(main):005:1> end
=> nil
irb(main):006:0> case
irb(main):007:1* when no_quesiton
irb(main):008:1> print "no question"
irb(main):009:1> end
NameError: undefined local variable or method `no_quesiton' for main:Object
        from (irb):7
        from C:/Ruby192/bin/irb:12:in `<main>'


Cheers


 
James Cumming, CFA
+44 7799 554468
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