ruby aliasing

September 30th, 2008 • Uncategorized

irb(main):001:0> class Foo
irb(main):002:1>   alias model class
irb(main):003:1>   def bar
irb(main):004:2>     p self.model
irb(main):005:2>   end
irb(main):006:1>   def baz
irb(main):007:2>     p model
irb(main):008:2>   end
irb(main):009:1>   def self.bam
irb(main):010:2>     p model
irb(main):011:2>   end
irb(main):012:1> end
=> nil
irb(main):013:0> f = Foo.new
=> #
irb(main):014:0> f.bar
Foo
=> nil
irb(main):015:0> f.baz
Foo
=> nil
irb(main):016:0> Foo.bam
NameError: undefined local variable or method `model’ for Foo:Class
        from (irb):10:in `bam’
        from (irb):16
        from :0

irb(main):017:0> Foo.model
NoMethodError: undefined method `model’ for Foo:Class
        from (irb):17
        from :0

Tags: irb, ruby

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