From: Trans <transfire@...>
Date: 2007-06-13T07:36:17+09:00
Subject: Extending Symbol with #to_str effects Struct.new

Not arguing either way a s to whether this makes sense or not (it's
had it's lengthy discussions before).

  > class Symbol
  >    def to_str
  >      String(self)
  >    end
  >  end

But it does cause this strangeness:

  > Struct.new(:x)
  NameError: identifier x needs to be constant
        from (irb):6:in `new'
        from (irb):6
        from :0

Is it really THAT unreasonable an extension? I wonder what else it
would effect, and why. I don't really even understand the error
message, but one gets the same result with:

  > Struct.new('x')
  NameError: identifier x needs to be constant
        from (irb):1:in `new'
        from (irb):1
        from :0

That in itself seems silly.

T.