Re: nil.to_s != "nil"

From: Eero S. [mailto:[email protected]]

true.to_s # => “true”
false.to_s # => “false”
nil.to_s # => “”

“” is not a valid representation of nil. “nil” is.

How do you define “valid”?
obj == eval(obj.to_s)
?

If that is your criteria, then:
a) Most to_s aren’t “valid”, and
b) #inspect is a better shot

irb(main):001:0> [ true, false, nil, [], “Hello”, 1.24 ].each{ |x|
irb(main):002:1* p eval( x.inspect )
irb(main):003:1> }
true
false
nil
[]
“Hello”
1.24

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